DE2929278A1 - Verfahren zum eingefrieren von zellsuspensionen - Google Patents
Verfahren zum eingefrieren von zellsuspensionenInfo
- Publication number
- DE2929278A1 DE2929278A1 DE19792929278 DE2929278A DE2929278A1 DE 2929278 A1 DE2929278 A1 DE 2929278A1 DE 19792929278 DE19792929278 DE 19792929278 DE 2929278 A DE2929278 A DE 2929278A DE 2929278 A1 DE2929278 A1 DE 2929278A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- chamber
- sample
- freezing
- cooling rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007710 freezing Methods 0.000 title claims abstract description 75
- 230000008014 freezing Effects 0.000 title claims abstract description 75
- 239000006285 cell suspension Substances 0.000 title claims description 28
- 206010028980 Neoplasm Diseases 0.000 title claims description 7
- 238000002560 therapeutic procedure Methods 0.000 title description 15
- 238000002360 preparation method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 86
- 238000001816 cooling Methods 0.000 claims abstract description 83
- 210000001772 blood platelet Anatomy 0.000 claims abstract description 19
- 210000004698 lymphocyte Anatomy 0.000 claims abstract description 17
- 210000003714 granulocyte Anatomy 0.000 claims abstract description 13
- 210000003743 erythrocyte Anatomy 0.000 claims abstract description 12
- 210000000130 stem cell Anatomy 0.000 claims abstract description 11
- 210000002798 bone marrow cell Anatomy 0.000 claims abstract description 8
- 210000004027 cell Anatomy 0.000 claims description 91
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 24
- 230000002528 anti-freeze Effects 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 8
- 150000001413 amino acids Chemical class 0.000 claims description 8
- 239000008103 glucose Substances 0.000 claims description 7
- 238000010257 thawing Methods 0.000 claims description 6
- 239000007798 antifreeze agent Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 229920001612 Hydroxyethyl starch Polymers 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 4
- 235000011187 glycerol Nutrition 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 229940050526 hydroxyethylstarch Drugs 0.000 claims description 4
- 230000005012 migration Effects 0.000 claims description 4
- 238000013508 migration Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 3
- 229920002307 Dextran Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 239000002577 cryoprotective agent Substances 0.000 claims 2
- 230000008569 process Effects 0.000 abstract description 28
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 68
- 239000000243 solution Substances 0.000 description 17
- 230000008859 change Effects 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 239000013074 reference sample Substances 0.000 description 6
- 230000004083 survival effect Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- VEMLQICWTSVKQH-BTVCFUMJSA-N (2r,3s,4r,5r)-2,3,4,5,6-pentahydroxyhexanal;propane-1,2,3-triol Chemical compound OCC(O)CO.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O VEMLQICWTSVKQH-BTVCFUMJSA-N 0.000 description 3
- 210000001185 bone marrow Anatomy 0.000 description 3
- 230000036512 infertility Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000001225 therapeutic effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 210000000601 blood cell Anatomy 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910001006 Constantan Inorganic materials 0.000 description 1
- 239000009998 Cool-X-A Substances 0.000 description 1
- -1 Polyethylene Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011443 conventional therapy Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005138 cryopreservation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002900 effect on cell Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005534 hematocrit Methods 0.000 description 1
- 230000002631 hypothermal effect Effects 0.000 description 1
- 230000028993 immune response Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 239000006101 laboratory sample Substances 0.000 description 1
- 210000000265 leukocyte Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011275 oncology therapy Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/10—Preservation of living parts
- A01N1/16—Physical preservation processes
- A01N1/162—Temperature processes, e.g. following predefined temperature changes over time
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/10—Preservation of living parts
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/10—Preservation of living parts
- A01N1/12—Chemical aspects of preservation
- A01N1/122—Preservation or perfusion media
- A01N1/125—Freeze protecting agents, e.g. cryoprotectants or osmolarity regulators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/15—Cells of the myeloid line, e.g. granulocytes, basophils, eosinophils, neutrophils, leucocytes, monocytes, macrophages or mast cells; Myeloid precursor cells; Antigen-presenting cells, e.g. dendritic cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/17—Lymphocytes; B-cells; T-cells; Natural killer cells; Interferon-activated or cytokine-activated lymphocytes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/18—Erythrocytes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/19—Platelets; Megacaryocytes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/28—Bone marrow; Haematopoietic stem cells; Mesenchymal stem cells of any origin, e.g. adipose-derived stem cells
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Cell Biology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Zoology (AREA)
- Hematology (AREA)
- Developmental Biology & Embryology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Biotechnology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Virology (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Environmental Sciences (AREA)
- Wood Science & Technology (AREA)
- Dentistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792929278 DE2929278A1 (de) | 1979-07-19 | 1979-07-19 | Verfahren zum eingefrieren von zellsuspensionen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792929278 DE2929278A1 (de) | 1979-07-19 | 1979-07-19 | Verfahren zum eingefrieren von zellsuspensionen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2929278A1 true DE2929278A1 (de) | 1981-01-29 |
| DE2929278C2 DE2929278C2 (enrdf_load_stackoverflow) | 1989-03-30 |
Family
ID=6076186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792929278 Granted DE2929278A1 (de) | 1979-07-19 | 1979-07-19 | Verfahren zum eingefrieren von zellsuspensionen |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2929278A1 (enrdf_load_stackoverflow) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8717091U1 (de) * | 1987-12-30 | 1988-03-10 | Colora Messtechnik Gmbh, 7073 Lorch | Gerät zum Schockgefrieren von Blutplasma |
| WO1989001286A1 (en) * | 1987-08-21 | 1989-02-23 | Cryolife, Inc. | Device and method for cryopreserving blood vessels |
| EP0356258A3 (en) * | 1988-08-26 | 1990-06-06 | Cryopharm Corporation | Processes for the lyophilization of red blood cells, together with media for lyophilization |
| WO1991001635A3 (en) * | 1989-08-07 | 1991-03-21 | Cell Systems Ltd | Cooling process and apparatus |
| US5340592A (en) * | 1988-05-18 | 1994-08-23 | Cobe Laboratories, Inc. | Lyophilization of erythrocytes |
| WO1995010291A1 (en) * | 1993-10-08 | 1995-04-20 | Cellpro Ii | Methods for collection and cryopreservation of human granulocytes |
| US5425951A (en) * | 1988-05-18 | 1995-06-20 | Cryopharm Corporation | Method of reconstituting lyophilized cells |
| US5580714A (en) * | 1995-03-08 | 1996-12-03 | Celox Laboratories, Inc. | Cryopreservation solution |
| WO1997043586A1 (de) | 1996-05-11 | 1997-11-20 | Bernd Mingers | Verfahren und vorrichtung zum gefrieren von zellsuspensionen |
| WO1999020104A1 (en) * | 1997-10-22 | 1999-04-29 | Elizabeth Acton | Method and apparatus for cryopreservation |
| EP1012499A4 (en) * | 1996-01-30 | 2000-07-05 | Organogenesis Inc | DEVICE FOR ICE CRYSTALIZATION FOR SYSTEMS FOR FREEZER PRESERVATION |
| US6461645B1 (en) | 1987-11-12 | 2002-10-08 | Pharmastem Therapeutics, Inc. | Isolation and preservation of fetal and neonatal hematopoietic stem and progenitor cells of the blood |
| WO2003000052A1 (en) * | 2001-06-26 | 2003-01-03 | Human Biosystems | Preservation of blood platelets at cold temperatures |
| US7029839B2 (en) | 2003-04-23 | 2006-04-18 | Human Biosystems | Methods and solutions for storing donor organs |
| US7083910B2 (en) | 2003-08-04 | 2006-08-01 | Human Biosystems | Preservation of blood platelets with citrate |
| US7202020B2 (en) | 1998-10-30 | 2007-04-10 | Human Biosystems | Compositions, methods and apparatuses for preserving platelets |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117881A (en) * | 1977-06-14 | 1978-10-03 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | System for and method of freezing biological tissue |
-
1979
- 1979-07-19 DE DE19792929278 patent/DE2929278A1/de active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117881A (en) * | 1977-06-14 | 1978-10-03 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | System for and method of freezing biological tissue |
Non-Patent Citations (5)
| Title |
|---|
| HARPER H.A. (Ed.) Physiologische Chemie, Springer, Berlin, 1975, S.724 u. 849 * |
| SCHEIWE M.W. u.a., VDI-Berichte Nr.315 (1978), S.447-463 * |
| SCHEIWE M.W., KRAUSE K.H.: Biomed.Technik 22, (1977), S.413-416 * |
| SCHEIWE M.W., SCHWINDKE P.: Biomed.Technik 23, (1978), S.144-151 * |
| SCHEIWE, M.W., SCHWINDKE, P., ESSERS, U.: A new freezing process for the Cryopreservation of Immunological Active Cells for Antologous Appli- cation in Tumor Therapy, Digest of the 11th In- ternational Conference of Biological Engineering 1976, Ottawa, 2 Seiten * |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989001286A1 (en) * | 1987-08-21 | 1989-02-23 | Cryolife, Inc. | Device and method for cryopreserving blood vessels |
| US5122110A (en) * | 1987-08-21 | 1992-06-16 | Cryolife, Inc. | Device and method for cryopreserving blood vessels |
| US6461645B1 (en) | 1987-11-12 | 2002-10-08 | Pharmastem Therapeutics, Inc. | Isolation and preservation of fetal and neonatal hematopoietic stem and progenitor cells of the blood |
| US6605275B1 (en) | 1987-11-12 | 2003-08-12 | Pharmastem Therapeutics, Inc. | Isolation and preservation of fetal and neonatal hematopoietic stem and progenitor cells of the blood |
| US6569427B1 (en) | 1987-11-12 | 2003-05-27 | Pharmastem Therapeutics, Inc. | Isolation and preservation of fetal and neonatal hematopoietic stem and progenitor cells of the blood |
| DE8717091U1 (de) * | 1987-12-30 | 1988-03-10 | Colora Messtechnik Gmbh, 7073 Lorch | Gerät zum Schockgefrieren von Blutplasma |
| US5340592A (en) * | 1988-05-18 | 1994-08-23 | Cobe Laboratories, Inc. | Lyophilization of erythrocytes |
| US5425951A (en) * | 1988-05-18 | 1995-06-20 | Cryopharm Corporation | Method of reconstituting lyophilized cells |
| EP0356258A3 (en) * | 1988-08-26 | 1990-06-06 | Cryopharm Corporation | Processes for the lyophilization of red blood cells, together with media for lyophilization |
| WO1991001635A3 (en) * | 1989-08-07 | 1991-03-21 | Cell Systems Ltd | Cooling process and apparatus |
| WO1995010291A1 (en) * | 1993-10-08 | 1995-04-20 | Cellpro Ii | Methods for collection and cryopreservation of human granulocytes |
| US5580714A (en) * | 1995-03-08 | 1996-12-03 | Celox Laboratories, Inc. | Cryopreservation solution |
| EP1012499A4 (en) * | 1996-01-30 | 2000-07-05 | Organogenesis Inc | DEVICE FOR ICE CRYSTALIZATION FOR SYSTEMS FOR FREEZER PRESERVATION |
| EP1763997A3 (en) * | 1996-01-30 | 2007-04-04 | Organogenesis Inc. | Ice seeding apparatus for cryopreservation systems |
| WO1997043586A1 (de) | 1996-05-11 | 1997-11-20 | Bernd Mingers | Verfahren und vorrichtung zum gefrieren von zellsuspensionen |
| GB2346064B (en) * | 1997-10-22 | 2001-07-25 | Elizabeth Acton | Method and apparatus for cryopreservation |
| US6361934B1 (en) | 1997-10-22 | 2002-03-26 | Elizabeth Acton | Method and apparatus for cryopreservation |
| GB2346064A (en) * | 1997-10-22 | 2000-08-02 | Elizabeth Acton | Method and apparatus for cryopreservation |
| WO1999020104A1 (en) * | 1997-10-22 | 1999-04-29 | Elizabeth Acton | Method and apparatus for cryopreservation |
| US7202020B2 (en) | 1998-10-30 | 2007-04-10 | Human Biosystems | Compositions, methods and apparatuses for preserving platelets |
| WO2003000052A1 (en) * | 2001-06-26 | 2003-01-03 | Human Biosystems | Preservation of blood platelets at cold temperatures |
| US7029839B2 (en) | 2003-04-23 | 2006-04-18 | Human Biosystems | Methods and solutions for storing donor organs |
| US7083910B2 (en) | 2003-08-04 | 2006-08-01 | Human Biosystems | Preservation of blood platelets with citrate |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2929278C2 (enrdf_load_stackoverflow) | 1989-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8366 | Restricted maintained after opposition proceedings | ||
| 8305 | Restricted maintenance of patent after opposition | ||
| D4 | Patent maintained restricted | ||
| 8339 | Ceased/non-payment of the annual fee |