Tissues,Fetal

《英文msh词典》Tissues,Fetal
[入口词] Tissues,Fetal
[主题词] Fetus
[英文释义] The unborn young of a viviparous mammal,in the postembryonic period,after the major structures have been outlined. In humans,the unborn young from the end of the eighth week after CONCEPTION until BIRTH,as distinguished from the earlier EMBRYO.