全台灣最大的一支鉛筆~哇...也太誇張了吧 (點圖看大圖喔)
Stem cell - Wikipedia, the free encyclopedia全台灣最大的一支鉛筆~哇...也太誇張了吧!! (點圖看大圖喔)Stem cells are undifferentiated biological cells that can differentiate into specialized cells and can divide (through mitosis) to produce more stem cells. They are found in multicellular organisms. In mammals, there are two broad types of stem cells: emb...
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