International A Level Biology / Development of organisms
Stem cells: totipotent and pluripotent revision notes
Edexcel International A Level Biology (YBI11), chapter 9: Development of organisms, specification point 3.17. Part of the full course.
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Stem cells divide to make more stem cells and can differentiate into specialised cell types. As an embryo develops, its cells become less potent: they go from totipotent to pluripotent, and later to multipotent.