WO2013155962A1 - 一种高通量细胞培养器及其制造方法 - Google Patents

一种高通量细胞培养器及其制造方法 Download PDF

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WO2013155962A1
WO2013155962A1 PCT/CN2013/074292 CN2013074292W WO2013155962A1 WO 2013155962 A1 WO2013155962 A1 WO 2013155962A1 CN 2013074292 W CN2013074292 W CN 2013074292W WO 2013155962 A1 WO2013155962 A1 WO 2013155962A1
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cell culture
culture
cell
cells
sealing plug
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PCT/CN2013/074292
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English (en)
French (fr)
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袁建华
袁晔
方想元
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广州洁特生物过滤制品有限公司
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Priority claimed from CN2012101156342A external-priority patent/CN102643744A/zh
Priority claimed from CN 201220167380 external-priority patent/CN202626198U/zh
Application filed by 广州洁特生物过滤制品有限公司 filed Critical 广州洁特生物过滤制品有限公司
Publication of WO2013155962A1 publication Critical patent/WO2013155962A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • C12M23/04—Flat or tray type, drawers
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/44—Multiple separable units; Modules
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/10—Perfusion

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  • the invention relates to a cell culture device and a preparation method thereof, in particular to a high-throughput cell culture device and a preparation method thereof. Background technique
  • Large-scale in vitro culture techniques for human and animal cells are techniques for culturing animal cells in a cell culture carrier (container) at a high density in a cell culture carrier (container) for the production of biological products under artificial conditions.
  • Commonly used large-scale cultured animal cells include chicken embryo fibroblasts, primary hamster kidney cells and the like, and human diploid cells, CH0 cells, Vero cells, and the like. These cells are in vaccine production, monoclonal antibody preparation, erythropoietin And other product areas are widely used.
  • Commonly used human cells include stem cells, NK cells, skin cells, and the like.
  • the rotary bottle technique is a traditional adherent cell culture technique in which the cells are seeded in a rotating cylindrical incubator-rotary bottle, and the rotating bottle is continuously rotated during the culture, so that the cells alternately contact the culture solution and the air.
  • the rotary bottle culture has a structural unit, the investment is small, the technology is mature, and the enlargement only needs to increase the number of the rotating bottles.
  • It also has its shortcomings: It has a large labor intensity, a large footprint, a small surface area for cell growth per unit volume, a low cell growth density, and difficulty in controlling the difference between bottles, so it is difficult to industrialize or scale production.
  • the “Cell Factory” was developed by Corning and Thermo Fier, Inc., which has made great progress in promoting cell culture to automation, high efficiency, and industrial production.
  • This system failed to solve the problem of non-invasive recovery of cells after culture and simultaneous culture of multiple cells in one reactor.
  • the system cannot simultaneously culture multiple or multiple cells in the same cell culture device;
  • one of the objects of the present invention is to provide a high-throughput cell culture device for performing cell culture, feeding and harvesting thereof in a closed state, It reduces the possibility of contamination during the cultivation process.
  • Another object of the present invention is to provide a method for manufacturing the above high-flux cell culture device.
  • the present invention adopts the following technical solutions:
  • a high-flux cell culture device comprising a cell culture chamber, the cell culture chamber being separated by a plastic separator into a plurality of independent cell culture layers, wherein the cell culture layer is provided with a medium inlet and outlet and a sealing plug a sealing port with a filter is inserted into the sealing plug, and the medium inlet and outlet ports are connected to the feeding device through a pipeline, and the feeding device is respectively connected to the culture liquid storage tank and the cell collecting bottle through the pipeline .
  • the feeding device is a single or multiple tube peristaltic pump.
  • a vacuum filter is provided above the culture fluid storage tank.
  • the cell culture chamber is made of plastic.
  • the sealing plug is a rubber sealing plug.
  • the inner wall of the cell culture layer is an inner wall subjected to hydrophilic modification treatment.
  • the inner wall of the cell culture layer is provided with a temperature-sensitive pNIPAAM layer.
  • the method for producing a high-flux cell culture device described above comprises the steps of: injection molding a component of a cell culture chamber, followed by ultrasonic plastic welding to form a cell culture chamber.
  • the surface of the cell culture chamber in contact with the cells is hydrophilically modified using a plasma surface modification technique.
  • the cell culture device of the invention can simultaneously culture a plurality of cells, and provides an ideal tool for in vitro culture of clinical cell-treated cells; using the cell culture device of the invention, the cell culture, the feeding and the harvesting thereof can be carried out in a closed state. , greatly reducing the possibility of being contaminated during the cultivation process.
  • the cell culture device of the invention is the first in the country to develop a high-precision, automated, programmed, continuous and efficient production device for cell culture and harvesting of cells and products thereof, so that cell culture and cell and its product harvesting processes are integrated in one reaction. In a process or in a process step, thereby streamlining the process flow, improving production efficiency, and solving problems such as cell adherence and closed feeding and harvesting after completion of cultivation;
  • the cell culture device of the invention can determine the culture amount of the cells as needed, can conveniently switch different culture media, meet the needs of different cell culture stages, and can conveniently adjust the culture amount of the cells, which can be used for research and development, or can be used for research and development. For practical production, the application range is wider.
  • the inner wall is made hydrophilic, thereby enhancing the cell adherence rate and improving the cell culture efficiency.
  • Figure 1 is a schematic view showing the structure of a cell culture device of the present invention
  • Figure 2 is a schematic view showing the structure of a cell culture chamber of the present invention
  • Figure 3 is a schematic structural view of the sealing plug of the present invention
  • Figure 4 is a schematic view showing the structure of the feeding device of the present invention.
  • a high-flux cell culture device includes a cell culture chamber 1 which is separated into a plurality of independent cells by a separator.
  • the cell culture layer 2 is composed.
  • the cell culture layer 2 is provided with a medium inlet and outlet port 21 and a sealing plug 22. After the sealing plug 22 is inserted, a venting port 24 with a filter 23 is inserted, and the medium inlet and outlet port 21 passes through the pipeline.
  • the feeding device 3 is connected, and the feeding device 3 is connected to the culture liquid storage tank 4 and the cell collection bottle 5 through a line, respectively.
  • the feeding device is a single or multiple tube peristaltic pump.
  • the peristaltic pump allows easy adjustment of flow rate and flow, and can be remotely operated from a computer, further reducing human intervention and reducing the risk of contamination of cells.
  • a vacuum filter 41 is provided above the culture solution tank 4.
  • the prepared culture solution is sterilized by a vacuum filter to facilitate the feeding of the culture solution and also reduce the risk of contamination of the culture solution.
  • the cell culture chamber is made of plastic.
  • the inner wall of the cell culture layer is an inner wall subjected to hydrophilic modification treatment.
  • the sealing plug is a rubber sealing plug.
  • a temperature-sensitive pNIPAAM (polyisopropylacrylamide) layer 20 is provided on the inner wall of the cell culture layer 2.
  • Polyisopropylacrylamide has a lower critical solution temperature (LCST 32 °C). When the temperature is higher than the critical solution temperature (such as 37 °C), the polymer exhibits hydrophobic properties; when the temperature is lower than the critical solution temperature At the time (eg, 30 ° C), the polymer exhibits hydrophilic character.
  • the cell culture device was subcultured at 37 °C, the cells showed adherent growth; when the temperature was lower than 32 °C, the cells lost their adherence and adsorption capacity and fell off in the culture solution. In this way, the non-destructive detachment of the cells can be achieved, and the damage caused to the cells by the ordinary physical method and the enzymatic detachment treatment can be avoided.
  • the temperature-sensitive pNIPAAM layer that is, the polyisopropylacrylamide layer
  • the polyisopropylacrylamide layer may be disposed on the inner wall of the cell culture layer, such as by grafting on the inner wall, and the grafting method may be carried out according to an existing method, such as Huang Jian et al. Polymer microfiltration membrane plasma treatment of grafting N-isopropyl acrylamide, polymer materials science and engineering [J], July 2003, Vol. 19, No. 4, P48 ⁇ 51 method.
  • the above method for producing a cell culture device comprises injection molding a member of a cell culture chamber by injection molding, and then welding into a cell culture chamber using ultrasonic plastic welding.
  • the surface of the cell culture chamber in contact with the cells is hydrophilically modified using a plasma surface modification technique.
  • the modified inner wall can better promote the adherent growth of the cells.
  • gas exchange can be performed through the ventilating port to balance the pressure inside and outside the cell culture layer to facilitate feeding.
  • the needle can be inserted into the sealing plug, the cells are inoculated, and after the inoculation is completed, the seal is removed and sealed.
  • the plug is naturally sealed, easy to operate, and difficult to contaminate the culture solution.
  • the culture solution can also be fed separately by the feeding device, so that different cells can be cultured in different cell culture layers, and waste liquid and new culture solution can be eliminated at different stages of cell culture. .
  • the cell culture device of the present invention a plurality of cells can be conveniently cultured, and the culture amount of the cells can be set as needed.
  • the cells After the cells have matured, the cells are detached, and then the cultured cells are sucked up by a feeding device and collected in a cell collector.
  • the cell culture device of the invention can simultaneously culture a plurality of cells, and provides an ideal tool for in vitro culture of clinical cell-treated cells; using the cell culture device of the invention, the cell culture, the feeding and the harvesting thereof can be carried out in a closed state. , greatly reducing the possibility of being contaminated during the cultivation process.
  • the cell culture device of the invention is the first in the country to develop a high-precision, automated, programmed, continuous and efficient production device for cell culture and harvesting of cells and products thereof, so that cell culture and cell and its product harvesting processes are integrated in one reaction.
  • the process is carried out in a process or a process step to thereby streamline the process, increase production efficiency, and solve problems such as cell adherence and closed feed and harvest after completion of the culture.
  • the cell culture device of the invention can determine the culture amount of the cells as needed, can conveniently switch different culture media, meet the needs of different cell culture stages, and can conveniently adjust the culture amount of the cells, which can be used for research and development, or can be used for research and development. For practical production, the application range is wider.

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Abstract

本发明公开了一种高通量细胞培养器及其制造方法。高通量细胞培养器，包括细胞培养室，所述细胞培养室由塑料隔板隔离为多个独立的细胞培养层组成，所述细胞培养层中设有培养基进出料口和密封塞，所述密封塞中插入有带过滤器的通风端口，所述培养基进出料口通过管路与进料装置相连，所述进料装置通过管路分别与培养液储罐和细胞收集瓶相连。本发明的细胞培养器，可以根据需要确定细胞的培养量，可以方便地切换不同的培养基，满足不同细胞培养阶段的需求，可以方便地调节细胞的培养量，既可以用于研发，也可以用于实际生产，应用范围更广。

Description

一种高通量细胞培养器及其制造方法 技术领域
本发明涉及一种细胞培养器及其制备方法， 特别涉及一种高通 量细胞培养器及其制备方法。 背景技术
近十几年来， 由于生物制品行业的飞速发展， 传统的通过生物化 学技术从动物组织获取生物制品的方法已经远远不能满足市场的需 求，通过动物细胞在体外大规模培养来表达特定的蛋白、单克隆抗体、 干扰素及病毒疫苗制品已成为目前最普遍的技术。 另外， 最近几年随 着干细胞技术的发展， 对人体细胞培养应用日益广泛， 其中， 组织器 官再造和细胞疗法已成为人类疾病治疗最有希望的方法。细胞疗法是 指应用人的自体、 同种异体或异种（非人体）的体细胞， 经体外操作 后回输（或植入)人体的治疗方法。这种体外操作包括细胞在体外的传 代、 扩增、 筛选以及药物或其他能改变细胞生物学行为的处理。 经过 体外操作后的细胞可用于疾病的治疗， 也可用于疾病的诊断或预防。
人体及动物细胞体外大规模培养技术是在人工条件下， 设定 pH、 温度、 溶氧等， 在细胞培养载体（容器）中高密度大量培养动物细胞 用于生产生物制品的技术。常用的大规模培养的动物细胞有鸡胚成纤 维细胞、 原代地鼠肾细胞等多种元代细胞， 及人二倍体细胞、 CH0细 胞、 Vero 细胞等。 这些细胞在疫苗生产、 单抗制备、 红细胞生成素 等产品领域广泛应用。 常用的人体细胞有干细胞、 NK 细胞、 皮肤细 胞等。
目前常用的细胞大规模培养方法有常规细胞培养瓶培养、转瓶培 养、 生物反应器培养和细胞工厂等。 转瓶技术为传统的贴壁细胞培养 技术， 细胞接种在旋转的圓筒形培养器 -转瓶中， 培养过程中转瓶不 断旋转， 使细胞交替接触培养液和空气。 转瓶培养具有结构筒单， 投 资少， 技术成熟， 放大只需筒单的增加转瓶数量等优点。 但也有其缺 点： 劳动强度大， 占地空间大， 单位体积提供细胞生长的表面积小， 细胞生长密度低， 瓶间差异较难控制等， 因而难以产业化或规模化生 产。
"细胞工厂" 由 Corning公司和 Thermo Fi sher公司开发， 该装 置将细胞培养推向自动化、 高效化、 工业化生产， 有了巨大的进步。 但该系统未能解决培养结束后的细胞无损伤性回收及多株细胞在一 个反应器中同时培养的问题。 此外， 该系统无法在同一细胞培养装置 中同时培养多批或多株细胞；
常规细胞培养亚、 板和瓶均为开放式， 加液、 接种及细胞收获操 作过程极易发生污染。
因此， 有必要开发出一种新型的高通量细胞培养器。 发明内容
针对现有技术的不足，本发明的目的之一在于提供一种高通量细 胞培养器， 用以使细胞培养及其加料和收获在封闭状态下进行， 大大 减少了其在培养过程中被污染的可能性。
本发明的目的之二在于提供上述高通量细胞培养器的制造方法； 为实现上述目的一， 本发明采用如下技术方案：
一种高通量细胞培养器， 包括细胞培养室， 所述细胞培养室由塑 料隔板隔离为多个独立的细胞培养层组成，所述细胞培养层中设有培 养基进出料口和密封塞， 所述密封塞中插入有带过滤器的通风端口， 所述培养基进出料口通过管路与进料装置相连，所述进料装置通过管 路分别与培养液储罐和细胞收集瓶相连。
作为本发明的进行一步改进， 所述进料装置为单管或多管蠕动 泵。
作为本发明的进行一步改进， 培养液储罐上方设有真空式过滤 器。
作为本发明的进行一步改进， 细胞培养室由塑料制成。
作为本发明的进行一步改进， 密封塞为橡胶密封塞。
作为本发明的进行一步改进，细胞培养层的内壁为经过亲水改性 处理的内壁。
作为本发明的进行一步改进，所述细胞培养层的内壁设有温敏型 pNIPAAM层。
为实现上述目的二， 本发明采用如下技术方案：
上述高通量细胞培养器的制造方法， 包括如下步骤： 使用注塑法 注塑得到细胞培养室的部件， 之后使用超声塑料焊接成为细胞培养 室。 作为本发明的进行一步改进，使用等离子表面改性技术对细胞培 养室与细胞相接触的部位进行亲水改性。
本发明的有益效果在于：
本发明的细胞培养器， 可同时培养多株细胞， 为临床细胞治疗的 细胞体外培养提供了理想的工具； 使用本发明的细胞培养器， 可以使 细胞培养及其加料和收获在封闭状态下进行，大大减少了其在培养过 程中被污染的可能性。
本发明的细胞培养器，在国内率先开发用于细胞培养和细胞及其 产物收获的高精度、 自动化、 程序化、 连续高效的生产装置， 使细胞 培养和细胞及其产物收获工序集成在一个反应器或一个工艺步骤中 进行， 从而筒化工艺流程、 提高生产效率， 解决细胞贴壁和封闭式加 料和培养结束后的收获等问题；
本发明的细胞培养器， 可以根据需要确定细胞的培养量， 可以方 便地切换不同的培养基， 满足不同细胞培养阶段的需求， 可以方便地 调节细胞的培养量， 既可以用于研发， 也可以用于实际生产， 应用范 围更广。
通过对内壁进行改性处理， 使内壁具有亲水性， 从而增强了细胞 的贴壁率， 提高了细胞的培养效率。 附图说明
图 1是本发明细胞培养器的结构示意图；
图 2是本发明细胞培养室的结构示意图； 图 3是本发明密封塞处的一种结构示意图；
图 4是本发明进料装置的一种结构示意图。
其中： 1、 细胞培养室； 2、 细胞培养层； 20、 温敏型 pNIPAAM层； 21、 进出料口； 22、 密封塞； 23、 过滤器； 24、 通风端口； 3、 进料 装置； 4、 培养液储罐； 41、 真空式过滤器； 5、 细胞收集瓶。 具体实施方式
下面， 结合附图以及具体实施方式， 对本发明做进一步描述： 参见图 1 ~ 4 , 一种高通量细胞培养器， 包括细胞培养室 1 , 细胞 培养室 1由隔板隔离为多个独立的细胞培养层 2组成， 细胞培养层 2 中的设有培养基进出料口 21和密封塞 22 , 密封塞 22后插入有带过 滤器 23的通风端口 24 , 培养基进出料口 21通过管路与进料装置 3 相连，进料装置 3通过管路分别与培养液储罐 4和细胞收集瓶 5相连。
作为本发明的进行一步改进， 进料装置为单管或多管蠕动泵。 蠕 动泵可以方便地调节流速和流量， 并可以通过计算机远程操作， 进一 步减少了人为操作， 降低了细胞被污染的风险。
作为本发明的进行一步改进，培养液储罐 4上方设有真空式过滤 器 41。 配制好的培养液经过真空式过滤器进行除菌处理， 方便了培 养液的进料， 同时也降低了培养液被污染的风险。
作为本发明的进行一步改进， 细胞培养室由塑料制成。
作为本发明的进行一步改进，细胞培养层的内壁为经过亲水改性 处理的内壁。 作为本发明的进行一步改进， 密封塞为橡胶密封塞。
作为对上述所有方案的进一步改进，在细胞培养层 2的内壁设有 温敏型 pNIPAAM (聚异丙基丙烯酰胺）层 20。 聚异丙基丙烯酰胺具有 一较低临界溶解温度（ LCST 32 °C ) , 当温度高于临界溶解温度时（如 37 °C ) , 该聚合物表现为疏水特性； 当温度低于临界溶解温度时（如 30 °C ) , 该聚合物表现为亲水特性。 当该细胞培养器亚置于 37 °C进 行培养时， 细胞呈现贴壁生长； 当温度低于 32 °C时， 细胞即失去贴 壁和吸附能力并脱落于培养液中。 这样可以实现细胞的无损脱壁， 避 免了普通物理法、 酶法脱壁处理对细胞造成的损害。
温敏型 pNIPAAM层即聚异丙基丙烯酰胺层，可以设置在细胞培养 层的内壁上， 如通过接枝处理设置在内壁上，接枝方法可以按现有方 法进行， 如黄健等人， 高分子微滤膜等离子体处理接枝 N-异丙基丙 烯酰胺，高分子材料科学与工程【J】， 2003年 7月，第 19 卷第 4 期， P48 ~ 51所公开的方法进行。
上述细胞培养器的制造方法，包括使用注塑法注塑得到细胞培养 室的部件， 之后使用超声塑料焊接成为细胞培养室。
作为上述方法的进一步改进，使用等离子表面改性技术对细胞培 养室与细胞相接触的部位进行亲水改性。 经过改性的内壁， 可以更好 地促进细胞的贴壁生长。
在培养细胞时， 培养液通过进料装置进料时， 可以通过通风端口 进行气体交换， 以平衡细胞培养层内外的气压， 方便进料。 在接种细 胞时， 可将针头插入密封塞中， 接种细胞， 接种完成之后拔出， 密封 塞自然密闭， 操作方便， 也不易污染培养液。
由于细胞培养层彼此独立， 培养液也可以通过进料装置单独进 料， 因此， 可以在不同的细胞培养层培养不同的细胞， 也可以在细胞 培养的不同阶段，排除废液和新的培养液。使用本发明的细胞培养器， 可以方便地培养多种细胞， 也可以根据需要设定细胞的培养量。
待细胞成熟后， 使细胞脱壁， 之后通过进料装置将培养好的细胞 外吸， 收集在细胞收集器中。
本发明的细胞培养器， 可同时培养多株细胞， 为临床细胞治疗的 细胞体外培养提供了理想的工具； 使用本发明的细胞培养器， 可以使 细胞培养及其加料和收获在封闭状态下进行，大大减少了其在培养过 程中被污染的可能性。
本发明的细胞培养器，在国内率先开发用于细胞培养和细胞及其 产物收获的高精度、 自动化、 程序化、 连续高效的生产装置， 使细胞 培养和细胞及其产物收获工序集成在一个反应器或一个工艺步骤中 进行， 从而筒化工艺流程、 提高生产效率， 解决细胞贴壁和封闭式加 料和培养结束后的收获等问题。
本发明的细胞培养器， 可以根据需要确定细胞的培养量， 可以方 便地切换不同的培养基， 满足不同细胞培养阶段的需求， 可以方便地 调节细胞的培养量， 既可以用于研发， 也可以用于实际生产， 应用范 围更广。
对本领域的技术人员来说， 可根据以上描述的技术方案以及构 思， 做出其它各种相应的改变以及形变， 而所有的这些改变以及形变 _ 都应该属于本发明权利要求的保护范围之内

Claims

权 利 要 求 书
1.一种高通量细胞培养器， 包括细胞培养室， 其特征在于： 所述 细胞培养室由塑料隔板隔离为多个独立的细胞培养层组成，所述细胞 培养层中设有培养基进出料口和密封塞，所述密封塞中插入有带过滤 器的通风端口， 所述培养基进出料口通过管路与进料装置相连， 所述 进料装置通过管路分别与培养液储罐和细胞收集瓶相连。
2.如权利要求 1所述的高通量细胞培养器， 其特征在于， 所述进 料装置为单管或多管蠕动泵。
3.如权利要求 1或 2所述的高通量细胞培养器， 其特征在于，培 养液储罐上方设有真空式过滤器。
4.如权利要求 1所述的高通量细胞培养器， 其特征在于， 细胞培 养室由塑料制成。
5.如权利要求 1所述的高通量细胞培养器， 其特征在于， 密封塞 为橡胶密封塞。
6.如权利要求 1所述的高通量细胞培养器， 其特征在于， 细胞培 养层的内壁为经过亲水改性处理的内壁。
7.如权利要求 1-6 任一项所述的高通量细胞培养器， 其特征在 于， 所述细胞培养层的内壁设有温敏型 pNIPAAM层。
8.如权利要求 4所述高通量细胞培养器的制造方法，包括如下步 骤： 使用注塑法注塑得到细胞培养室的部件， 之后使用超声塑料焊接 成为细胞培养室。
9.如权利要求 8所述的高通量细胞培养器的制造方法，其特征在 于：使用等离子表面改性技术对细胞培养室与细胞相接触的部位进行 O 2013/155962 ±n £.1 π PCT/CN2013/074292 权 利 要 求 书
亲水改性。
PCT/CN2013/074292 2012-04-18 2013-04-17 一种高通量细胞培养器及其制造方法 WO2013155962A1 (zh)

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