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细胞分选
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=== 4. 胎牛血清(FBS)作用 === 临时培养基:是细胞培养环节中常用的营养补充剂。含有大量的细胞生长因子、生长激素、蛋白质别的养分的混合物质,这都是细胞生长和生存所必须的。①胎牛血清是细胞的重要营养来源;②胎牛血清帮助细胞附着和扩散(许多细胞需要附着在基质上才能生长和分裂。胎牛血清含有纤维连接蛋白和层粘连蛋白等蛋白质,通过与细胞表面受体相互作用促进细胞附着和扩散。这些蛋白质为细胞粘附创造了有利的环境,并为细胞生长和扩张提供了锚定点。)③胎牛血清可以起缓冲和pH调节作用;④胎牛血清从多方面维持细胞健康(胎牛血清含有延缓细胞凋亡、有助于细胞存活的因子。这些生物活性物质,可以在一定程度上,减少细胞培养过程中,细胞死亡事件的发生,并为维持细胞活力提供有利帮助。) </div>
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