CN212658721U - Automatic change immunoblotting experimental apparatus - Google Patents
Automatic change immunoblotting experimental apparatus Download PDFInfo
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- CN212658721U CN212658721U CN202021914821.3U CN202021914821U CN212658721U CN 212658721 U CN212658721 U CN 212658721U CN 202021914821 U CN202021914821 U CN 202021914821U CN 212658721 U CN212658721 U CN 212658721U
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Abstract
The utility model discloses an automatic immunoblotting experimental device, which comprises a frame and a horizontal clapboard fixed in the frame, wherein the horizontal clapboard divides the frame into an upper layer and a lower layer; the frame is internally provided with: the device comprises a reagent sample adding module, a reagent recycling module, a reaction box, an oscillation cradle, a reagent liquid distributing and recycling module, a program setting and processing module and a power supply module. The utility model discloses can utilize built-in module to reaction time, distribution liquid, oscillation whether, retrieve liquid, operation cycle number isoparametric and program the setting according to the experiment needs, realize changeing required multistep reaction and the complete automation of multistep repetition washing membrane step behind the membrane. The utility model can greatly reduce repeated manual operation, reduce time fragmentation, greatly improve working efficiency and save manpower; meanwhile, the device has the functions of reagent recovery and oscillation, so that the reagent cost can be saved, the experimental effect can be ensured, and extra consumables are not required to be added; compared with the traditional manual operation, has remarkable advantages.
Description
Technical Field
The utility model belongs to the field of articles for molecular biology laboratory use, especially, relate to an automatic polyacrylamide gel electrophoresis-immunoblotting experimental apparatus.
Background
The polyacrylamide gel electrophoresis-immunoblotting experiment can detect whether an antigen exists in a sample to be detected through a known antibody, and is a common method for molecular biological research. The method generally comprises three important steps, namely, in the first step, Sodium Dodecyl Sulfate (SDS) -polyacrylamide gel electrophoresis (PAGE) is carried out on a sample containing the antigen protein; in the second step, the separated protein in the gel is electrically transferred to a nitrocellulose membrane (NC) or a polyvinylidene fluoride membrane (PVDF); and in the third step, NC or PVDF printed with protein bands is subjected to antigen-antibody reaction with a specific antibody and an enzyme-labeled second antibody in sequence, and then enzyme immunolocalization is performed after the action of corresponding enzyme substrates.
In the enzyme immunolocalization step, in order to avoid non-specific binding of the target antigen and the target antibody on the membrane, the target antigen and the target antibody are allowed to react for a period of time, and in addition, a blocking solution containing protein is required to be used for blocking, and meanwhile, the processes of continuously washing the membrane and changing the solution are required to be repeatedly carried out by using a buffer solution.
For example, an immunoblotting experiment washing box disclosed in chinese patent publication No. CN204503657U and a clamping immunoblotting analyzer disclosed in chinese patent publication No. CN209784374U all adopt a configuration that is convenient for an operator to operate to improve the experimental efficiency.
However, the above process is usually manual, and the time and steps of washing may cause errors between each time; the operator often needs to be timed to wait, so that the time of the operator is fragmented, the labor intensity is high, and the working efficiency is low.
Although a full-automatic immunoblotting instrument can be used at present, the detection principle after electrophoresis is different from that of the traditional immunoblotting method, and the price of the instrument and consumables is high, so that the instrument cannot be burdened by each laboratory.
Therefore, there is a need to develop an inexpensive, simple and practical immunoblotting operation device to reduce labor force, greatly improve work efficiency, ensure experimental efficiency, save experimental cost, and do not need to add extra consumables compared with the conventional manual operation.
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatic change immunoblotting experimental apparatus has greatly improved efficiency, reduces manual operation, simultaneously, practices thrift the reagent cost and guarantees the experiment effect.
An automatic immunoblotting experimental device comprises a frame and a horizontal clapboard fixed in the frame, wherein the horizontal clapboard divides the frame into an upper layer and a lower layer; the frame is internally provided with:
the reagent sample adding module is arranged on the upper layer of the frame and comprises a position for bearing a reagent container and a plurality of reagent containers for providing reagents for experiments;
the reagent recovery module is arranged on the lower layer of the frame and comprises a position for bearing a recovery container and a plurality of recovery containers for recovering the reagent after the test is finished, and the number of the recovery containers can correspond to that of the reagent containers according to the requirement.
The reaction box is arranged at the lower layer of the frame and is used for reacting the membrane loaded with the target protein with a corresponding antibody or washing the membrane with different buffers;
the reagent liquid distribution and recovery module comprises a plurality of electromagnetic valves corresponding to the recovery container and the reagent container; each electromagnetic valve is provided with three interfaces which are respectively connected to the reaction box, the corresponding reagent container and the corresponding recovery container through the conduits;
the program setting and processing module is electrically connected with the reagent liquid distribution and reagent recovery module and is used for setting parameters and programming experimental operation steps, filling the reagents of the corresponding operation steps into the reaction box according to set time, and extracting the reagents finished by the corresponding operation steps from the reaction box into the corresponding recovery container according to the set time;
and the power supply module is electrically connected with the program setting and processing module and is used for providing electric energy.
The utility model discloses the device, procedure setting processing module mainly used are programmed and are controlled distributing liquid, reaction time, washing number of times and recovery liquid. When the device is used, only the program setting processing module needs to be programmed in advance, so that one-time short-time (about several minutes to more than ten minutes) continuous operation can be realized, multiple times of long-time (about several hours to more than 2 days) intermittent repeated operation is replaced, manual operation can be reduced, labor intensity is reduced, time fragmentation of operators is reduced, labor cost is reduced, and research efficiency is greatly improved. Meanwhile, the reagent recovery is also considered, and the reagent cost can be saved.
Further, the reagent container includes: a washing liquid container, a sealing liquid container, a primary antibody container, a secondary antibody container, a reaction substrate A container and a reaction substrate B container;
the recovery container comprises: a washing solution recovery vessel, a sealing solution recovery vessel, a primary antibody recovery vessel, a secondary antibody recovery vessel, a reaction substrate A recovery vessel and a reaction substrate B recovery vessel.
Preferably, the lower part of the reaction box is provided with an oscillating table with adjustable frequency and time, and the oscillating table is electrically connected with the program setting processing module. The antigen-antibody reaction effect can be promoted by adding the oscillation function to the reaction box; the time is selected as desired.
In order to facilitate the installation of the electromagnetic valves, an installation rod is fixed below the horizontal partition plate by the frame, and the electromagnetic valves are sleeved and fixed on the installation rod.
Preferably, the program setting processing module and the power supply module are arranged on the upper layer of the frame.
The automatic immunoblotting experimental method using the automatic immunoblotting experimental device comprises the following steps:
(1) labeling all reagent containers and recovery containers with labels, and adding the prepared reagents into the reagent containers labeled with the corresponding labels respectively;
(2) placing the reaction box on a shaking table, and connecting the conduit of each electromagnetic valve to the reaction box and the corresponding reagent container and reagent recovery container;
(3) inserting a power supply, and setting and programming by using a program setting and processing module according to the requirement;
(4) putting the membrane transferred with the target protein into a reaction box, and simultaneously contacting the conduit of the electromagnetic valve with the bottom of the reaction box;
(5) starting an experiment according to the setting of the program setting processing module, and automatically shutting down the device by the system after the experiment step is completed; then the membrane is taken out from the reaction box for subsequent operation.
In the step (3), the programming setting is specifically as follows:
working parameters of the confining liquid, the washing liquid, the primary antibody, the secondary antibody, the reaction substrate A and the reaction substrate B are set in sequence according to requirements, and the working parameters comprise: whether injection, incubation or washing time, whether shaking, whether draining, whether recovery, number of cycles.
In the step (4), the size of the membrane to which the target protein is transferred is 0.1cm × 0.1cm to 50cm × 50 cm.
The membrane treated in the early stage is in a thin bar shape (3mm multiplied by 12 cm); the utility model discloses a molecular biology laboratory is with polyacrylamide gel-immunoblotting, and the membrane of washing and reaction is wide (6cm x 8cm) film form, also has not undergone earlier processing. Therefore, the method and the principle are obviously different when washing.
Compared with the traditional polyacrylamide gel-immunoblotting method, the utility model can adopt the same membrane, such as cellulose acetate membrane or PVDF membrane, and does not need other special instruments and consumables.
The utility model discloses the device can also extend temperature control module, can arrange the device in required ambient temperature through the design, like 4 degrees centigrade refrigerator, in different ambient temperature such as room temperature or 37 degrees centigrade.
Compared with the prior art, the utility model discloses following beneficial effect has:
the device of the utility model can realize the automatic completion of the steps of sealing, repeated washing for many times, antigen-antibody, enzyme and substrate reaction and the like after one-time programming operation and reagent adding. The traditional polyacrylamide gel-immunoblotting operation process is reserved, repeated manual operation is greatly reduced, labor and working time are saved, and working efficiency is remarkably improved; meanwhile, the reaction reagent recycling function is provided, so that the aim of saving the experiment cost is fulfilled; the experimental effect can be improved by oscillation in the reaction process.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an automated immunoblotting experimental apparatus according to the present invention;
FIG. 2 is a schematic view of the middle frame of the present invention;
FIG. 3 is a schematic view of a reagent loading module according to the present invention;
FIG. 4 is a schematic view of a reagent recovery module according to the present invention;
FIG. 5 is a schematic view of a reaction cassette according to the present invention;
FIG. 6 is a schematic view of a shaking table according to the present invention;
fig. 7 is a schematic diagram of the reagent liquid distribution and recovery module according to the present invention.
Detailed Description
The invention will be described in further detail with reference to the following figures and examples, which are intended to facilitate the understanding of the invention without limiting it.
As shown in fig. 1 and 2, an automatic immunoblotting experimental apparatus comprises a frame 1 and a horizontal partition plate 11 fixed in the frame 1, wherein the frame is divided into an upper layer and a lower layer by the horizontal partition plate 11; the frame 1 is internally provided with: the reagent sampling module 2, the reagent recovery module 3, the reaction box 4, the reagent liquid distribution and recovery module 5, the program setting processing module 6 and the power module 7.
The reagent sample adding module 2 is arranged on the upper layer of the frame 1 and comprises a plurality of reagent containers for providing reagents in the experimental process, and the reagent containers are not limited in size, shape, quantity and material. Specifically, as shown in fig. 3, the reagent container includes: a washing solution container 21, a stopper 22, a primary antibody container 23, a secondary antibody container 24, a reaction substrate A container 25, and a reaction substrate B container 26.
The reagent recovery module 3 is disposed at the lower layer of the frame 1, and includes a plurality of recovery containers for recovering the reagent after the test is completed, the number of the recovery containers may correspond to the number of the reagent containers as needed, and the recovery containers are not limited to the size, shape, number, and material. Specifically, as shown in fig. 4, the recovery container includes: a washing solution recovery vessel 31, a blocking solution recovery vessel 32, a primary antibody recovery vessel 33, a secondary antibody recovery vessel 34, a reaction substrate A recovery vessel 35, and a reaction substrate B recovery vessel 36.
The reaction cassette 4 is constructed as shown in FIG. 5, and is disposed under the frame 1, but not limited thereto. The nitrocellulose membrane or PVDF membrane used for carrying the target protein is reacted with the corresponding antibody or washed with a buffer solution. The lower part of the reaction box 4 is provided with an oscillating table 8 with adjustable frequency, and the oscillating table 8 is electrically connected with the program setting processing module 6.
A reagent liquid distribution and recovery module 5 including a plurality of electromagnetic valves 51 corresponding to the recovery containers and the reagent containers; each solenoid valve 51 has three ports, which are connected to the reaction cassette 4 and the corresponding reagent container and recovery container through the conduit 52. As shown in fig. 2, the frame 1 has a mounting rod 12 fixed below the horizontal partition 11, and a plurality of solenoid valves 51 are fitted and fixed to the mounting rod 12.
And the program setting processing module 6 is electrically connected with the reagent liquid distribution and recovery module 5 and is used for filling the reagent of the corresponding operation step into the reaction box 4 according to the set time and extracting the reagent of which the reagent is finished in the corresponding operation step from the reaction box 4 into the corresponding recovery container according to the set time. Specifically, the program setting processing module 6 is an experimental operation control unit composed of a single chip microcomputer and a processor, and can program and control experimental parameters including liquid distribution, reaction time, washing times, liquid recovery and the like.
And the power supply module 7 is electrically connected with the program setting processing module 6 and is used for supplying electric energy.
The procedures for SDS-polyacrylamide gel immunoblotting were as follows:
first, SDS-polyacrylamide gel electrophoresis step
1. Preparing glue; 2. sampling; 3. electrophoresis; 4. and (5) transferring the film.
II, western blot (this step will be completed by the utility model automatic device)
1. And (3) sealing: nitrocellulose membrane (membrane) to which target antigen is transferred: blocking with PBST containing skim milk powder for 2 hours.
2. Washing the membrane with PBST: 4 times for 5 minutes each.
3. Primary antibody incubation of membrane with recognizable target antigen: 20-37 ℃ for 3 hours or 4 ℃ overnight.
4. Washing the membrane with PBST: 4 times for 5 minutes each.
6. Membrane incubation with horseradish peroxidase (HRP) labeled secondary antibody: 20-37 ℃ for 1 hour.
PBST wash membrane: 6 times, 5 min/time.
8. Adding an enzyme substrate A.
9. Enzyme substrate B was added and the reaction was carried out for 5 minutes.
10. And developing or photographing for observation.
The following uses the immunoblotting method to measure Hsp90 as an example, and the automatic immunoblotting experimental device of the present invention is used for carrying out experimental operation.
Example 1
This example performed all immunoblotting reactions and membrane washing procedures in their entirety.
According to the manual operation steps:
sealing for 2 hours; washing the membrane for 4 times, 5 minutes each time; incubating the primary antibody for 6 hours; washing the membrane for 4 times, 5 minutes each time; incubating enzyme-labeled secondary antibody for 1 hour; washing the membrane for 6 times, 5 minutes each time; enzyme substrate A, B was added for 5 minutes.
Taking the immunoblotting method for measuring the heat shock protein 90(Hsp90) as an example, the method can be completed by the following operations:
1. the reagent containers used are labeled with labels as required: washing liquid, confining liquid, anti-Hsp 90 (primary antibody), horseradish peroxidase (HRP) labeled goat anti-rabbit (enzyme-labeled secondary antibody), reaction substrate A, reaction substrate B, washing waste liquid, recovering confining liquid, anti-Hsp 90 (primary antibody recovery), recovering HRP labeled goat anti-rabbit (secondary antibody recovery), recovered enzyme reaction substrate and the like.
2. And adding the prepared reagents into reagent containers marked with corresponding labels respectively.
3. The reaction cassette was placed on a shaking table.
4. A power supply is plugged in.
5. Programming with a program setting processing module as required:
setting and sealing: injecting; incubating for 120 minutes, and oscillating; pumping to dry; recovering; the cycle was 1 time.
Setting washing: injecting; washing for 5 minutes, and oscillating; pumping to dry; not recycling; circulating for 4 times; no liquid is retained.
Setting a primary antibody: injecting; incubating for 360 minutes, and oscillating; pumping to dry; recovering; the cycle was 1 time.
Setting washing: injecting; washing for 5 minutes, and oscillating; pumping to dry; not recycling; circulating for 4 times; no liquid is retained.
Setting a secondary antibody: injecting; incubating for 120 minutes, and oscillating; pumping to dry; not recycling; the cycle was 1 time.
Setting washing: injecting; washing for 5 minutes, and oscillating; pumping to dry; not recycling; circulating for 6 times; no liquid is retained.
Setting a substrate A: injecting; incubating for 0 min, and oscillating; no pumping out; not recycling; the cycle was 1 time.
Setting a substrate B: injecting; incubating for 5 minutes, and oscillating; no pumping out; not recycling; the cycle was 1 time.
6. The membrane with Hsp90 transferred was placed into the reaction cassette while the tubing was in contact with the bottom of the reaction cassette.
7. And starting clicking, and automatically shutting down the device by the system after the experiment step is completed.
8. And then taking out the membrane from the reaction box for subsequent detection and other operations.
Example 2
The steps of the operation can be adjusted as required, on the basis of carrying out all the immunoblotting reactions and membrane washing processes completely, the enzyme substrate A, B is not required to be added, the reaction is carried out for 5 minutes, and finally the washed membrane is stored in the buffer solution.
According to the manual operation steps:
sealing for 2 hours; washing the membrane for 4 times, 5 minutes each time; incubating the primary antibody for 6 hours; washing the membrane for 4 times, 5 minutes each time; incubating enzyme-labeled secondary antibody for 1 hour; the membranes were washed 6 times for 5 minutes each.
Taking the immunoblotting method for measuring the heat shock protein 90(Hsp90) as an example, the method can be completed by the following steps:
1. label labeling all reagent containers: washing liquid, blocking liquid, anti-Hsp 90 (primary antibody), horseradish peroxidase (HRP) labeled goat anti-rabbit (enzyme-labeled secondary antibody), washing waste liquid, recovering the blocking liquid, anti-Hsp 90 (recovering the primary antibody), recovering the HRP labeled goat anti-rabbit (recovering the secondary antibody) and the like.
2. And adding the prepared reagents into reagent containers marked with corresponding labels respectively.
3. The reaction cassette was placed on a shaking table.
4. A power supply is plugged in.
5. Programming with a program setting processing module as required:
setting and sealing: injecting; incubating for 120 minutes, and oscillating; pumping to dry; recovering; the cycle was 1 time.
Setting washing: injecting; washing for 5 minutes, and oscillating; pumping to dry; not recycling; circulating for 4 times; no liquid is retained.
Setting a primary antibody: injecting; incubating for 360 minutes, and oscillating; pumping to dry; recovering; the cycle was 1 time.
Setting washing: injecting; washing for 5 minutes, and oscillating; pumping to dry; not recycling; circulating for 4 times; no liquid is retained.
Setting a secondary antibody: injecting; incubating for 120 minutes, and oscillating; pumping to dry; not recycling; the cycle was 1 time.
Setting washing: injecting; washing for 5 minutes, and oscillating; pumping to dry; not recycling; circulating for 6 times; the liquid is retained.
Setting 7 substrate a: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
Setting 8 substrates B: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
6. The membrane with Hsp90 transferred was placed into the reaction cassette while the tubing was in contact with the bottom of the reaction cassette.
7. And starting clicking, and automatically shutting down the device by the system after the experiment step is completed.
8. Then the membrane is taken out from the reaction box for subsequent operation.
Example 3
And adjusting the operation steps as required, only executing a certain membrane washing process in the complete immunoblot, and finally storing the washed membrane in a buffer solution.
According to the manual operation steps: the membranes were washed 4 times for 5 minutes each.
Taking the immunoblotting method for detecting Hsp90 as an example, the following operations can be carried out by using the utility model:
1. label labeling reagent containers used: washing liquid and washing waste liquid.
2. And adding the prepared reagents into reagent containers marked with corresponding labels respectively.
3. The reaction cassette was placed on a shaking table.
4. A power supply is plugged in.
5. Programming with a program setting processing module as required:
setting 1 and sealing: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
Setting washing: injecting; washing for 5 minutes, and oscillating; pumping to dry; not recycling; circulating for 4 times; the liquid is retained.
Setting a primary antibody: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
Setting washing: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
Setting a secondary antibody: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
Setting washing: no injection is carried out; washing for 0 minute without shaking; no pumping out; not recycling; the cycle was 6 times.
Setting a substrate A: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
Setting a substrate B: no injection is carried out; incubation for 0 min without shaking; no pumping out; not recycling; and circulating for 0 times.
6. The membrane with Hsp90 transferred was placed into the reaction cassette while the tubing was in contact with the bottom of the reaction cassette.
7. And starting clicking, and automatically shutting down the device by the system after the experiment step is completed.
8. Then the membrane is taken out from the reaction box for subsequent operation.
The above-mentioned embodiment is to the technical solution and the beneficial effects of the present invention have been described in detail, it should be understood that the above is only the specific embodiment of the present invention, not used for limiting the present invention, any modification, supplement and equivalent replacement made within the principle scope of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An automatic immunoblotting experimental device comprises a frame and a horizontal clapboard fixed in the frame, wherein the horizontal clapboard divides the frame into an upper layer and a lower layer; it is characterized in that the frame is internally provided with:
the reagent sample adding module is arranged on the upper layer of the frame and comprises a position for bearing a reagent container and a plurality of reagent containers for providing reagents for experiments;
the reagent recovery module is arranged on the lower layer of the frame and comprises a position for bearing a recovery container and a plurality of recovery containers for recovering the reagent after the test is finished, and the number of the recovery containers corresponds to that of the reagent containers according to the requirement;
the reaction box is arranged at the lower layer of the frame and is used for reacting the membrane loaded with the target protein with a corresponding antibody or washing the membrane with different buffers;
the reagent liquid distribution and recovery module comprises a plurality of electromagnetic valves corresponding to the recovery container and the reagent container; each electromagnetic valve is provided with three interfaces which are respectively connected to the reaction box, the corresponding reagent container and the corresponding recovery container through the conduits;
the program setting and processing module is electrically connected with the reagent liquid distribution and recovery module and is used for setting parameters and programming experimental operation steps, filling the reagents of the corresponding operation steps into the reaction box according to set time, and extracting the reagents finished by the corresponding operation steps from the reaction box into the corresponding recovery container according to the set time;
and the power supply module is electrically connected with the program setting and processing module and is used for providing electric energy.
2. The automated immunoblotting experimental device of claim 1, wherein said reagent container comprises: a washing liquid container, a sealing liquid container, a primary antibody container, a secondary antibody container, a reaction substrate A container and a reaction substrate B container.
3. The automated immunoblotting experimental device of claim 1, wherein said recovery container comprises: a washing solution recovery vessel, a sealing solution recovery vessel, a primary antibody recovery vessel, a secondary antibody recovery vessel, a reaction substrate A recovery vessel and a reaction substrate B recovery vessel.
4. The automated immunoblotting experimental device of claim 1, wherein a shaking table with adjustable frequency and time is disposed at the lower part of said reaction cassette, and said shaking table is electrically connected to said program setting processing module.
5. The automated immunoblotting experimental device of claim 1, wherein a mounting rod is fixed on the frame below the horizontal partition plate, and a plurality of solenoid valves are sleeved and fixed on the mounting rod.
6. The automated immunoblot assay device of claim 1, wherein said programming processing module and power module are disposed on an upper level of said frame.
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| CN202021914821.3U CN212658721U (en) | 2020-09-04 | 2020-09-04 | Automatic change immunoblotting experimental apparatus |
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| CN202021914821.3U CN212658721U (en) | 2020-09-04 | 2020-09-04 | Automatic change immunoblotting experimental apparatus |
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