For 10 points, name these pluripotent cells with adult and embryonic varieties which have caused controversy over ethics in research due to disagreements over exactly when life begins.
These entities have been extensively researched at the University of Wisconsin which contains the Thomson Lab and Kyoto University which contains the Yamanaka Lab. The former lab extracted these entities from teratoma tumors. Sources of extraction for these entities can be found in the olfactory bulbs and the hippocampus, which yield the neural varieties of these entities. The small intestine's villis are sources of extraction for the epithelial varieties of these cells. For 10 points, name these pluripotent cells with adult and embryonic varieties which have caused controversy over ethics in research due to disagreements over exactly when life begins.
These entities have been extensively researched at the University of Wisconsin which contains the Thomson Lab and Kyoto University which contains the Yamanaka Lab.
{stem} cells