—For about five years. But it still looks quite new.
材料与用具:小鼠肺癌细胞悬浮液、物质X,癌细胞培养液、生理盐水、蒸馏水、活细胞检测仪、细胞培养瓶等(说明:对动物细胞的培养过程和检测方法不做具体要求)