沒有比這更環保的資源回收桶了....
Embryonic stem cell - Wikipedia, the free encyclopedia沒有比這更環保的資源回收桶了....Embryonic stem cells (ES cells) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage preimplantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at ......
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