But you can grow it in cultured cells, and the advantages of that are that you can do this under very reproducible conditions.

而且采用细胞培养疫苗,这种方法的优点是,你可以在同样条件下进行再培养

耶鲁公开课 - 生物医学工程探索课程节选

Much easier to keep a flask of cells under very sterile, very reproducible conditions than it is to keep a small animal, right?

保存一小瓶细胞,该细胞可在无菌条件下再生,这要比保存小动物容易的多

耶鲁公开课 - 生物医学工程探索课程节选