Preparing vaccines in cell cultures is not new.Aventis, for example, currently produces polio vaccines in the same monkey kidney cells that Baxter is gearing up to use to produce flu injections.

• 利用细胞培养来制造疫苗并不是新鲜事，例如百特准备用来制造流感注射疫苗的猴子肾脏细胞株，正是目前安万特巴斯德用来制造小儿痲痹疫苗的细胞株；