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    • 2. 发明授权
    • Method of making a porous matrix particle
    • 制造多孔基体颗粒的方法
    • US5629191A
    • 1997-05-13
    • US74922
    • 1993-06-10
    • Frederick Cahn
    • Frederick Cahn
    • C08J9/28C12N5/00C12N5/06C12P21/02
    • C08J9/28C12N5/0075C08J2389/06C12N2533/70
    • A porous particle having a generally isopycnic density with liquid growth medium, a sponge-like character and a diameter of less than 2 mm which is formed from a homogenous biologically compatible matrix is described. This particle is useful in various systems for culturing anchorage-dependent and -independent cells, and is adaptable to large scale tissue culture which permits harvesting of cell products. The method of making such a particle includes preparing a solution containing a biologically compatible material, forming droplets from the solution, freezing the droplets, drying the droplets by sublimation to form a particle, and crosslinking the biologically compatible material in the particle.
    • 描述了由均匀的生物相容性基质形成的与液体生长培养基具有大致等密度密度的多孔颗粒,海绵状特征和小于2mm的直径。 该颗粒可用于培养锚定依赖和不依赖细胞的各种系统,并且适用于允许细胞产物收获的大规模组织培养。 制备这种颗粒的方法包括制备包含生物相容性材料的溶液,从溶液中形成液滴,冷冻液滴,通过升华干燥液滴以形成颗粒,以及交联颗粒中的生物相容性材料。