把胚胎癌细胞注入小鼠的囊胚期胚胎,以观察:1.在正常胚胎环境下,胚胎癌细胞是否也会像正常胚胎细胞一样分化;2.注射的胚胎癌细胞所繁衍出来的细胞能否形成一般不见于畸胎癌而正常却见于胚胎的那些成分(如肝、肾、淋巴组织)。 Embryonic cancer cells are injected into the blastocyst stage embryos of mice to observe: 1. In the normal embryonic environment, whether the embryonic cancer cells also differentiate like normal embryonic cells; 2. The cells that are generated by the injected embryonic cancer cells can Whether those components that are normally found in teratocarcinoma but are normal but found in the embryo (such as liver, kidney, lymphoid tissue) are formed.