1. stem cells
This conundrum has become apparent in stem cell research. (Donor, P) Properties of a stem cell Stem cells are different from all somatic and reproductive cells in a human's body. ... Stem cells can proliferate for months and produce millions of unspecialized cells. ... (Martin, J) Types of stem cells Stem cells can be branched into two different types, embryonic stem cells and adult stem cells. Embryonic stem cells are extracted from a fresh human embryo. ...
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