1. Stem Cell
The new research in human developmental biology has led to the discovery of human stem cells, including embryonic stem cells(ES), embryonic germ cells(EG), fetal stem cells and adult stem cells(Recer,1). ... Stem cells can also be obtained from fetuses. ... The machine can separate off the blood cell population which contains the stem cells. ... Stem cells collected from an autologous transplant may be contaminated with tumor cells. ... The respondents of stem cell researchers were concerned that stem cell research would encourage abortion. ...
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