阿摩線上測驗
20.A source for stem cells to be found in humans is in ____?
(A) Adults, in several specialized tissues；
(B) Skin cells；
(C) Embryos, after division of the original zygote；
(D) All of the answer are correct.
(A) Adults, in several specialized tissues；
(B) Skin cells；
(C) Embryos, after division of the original zygote；
(D) All of the answer are correct.
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統計： A(2), B(0), C(3), D(4), E(0) #3325426
統計： A(2), B(0), C(3), D(4), E(0) #3325426
