cell differentiation human 82 Cell Differentiation 69 Humans 68 metabolism 57 Article 51 controlled study 42 Animals 40 animal 40 mouse 40 nonhuman 37 genetics 33 cell proliferation 30 Mice 27 cell culture 27 cytology 27 gene expression 27 human cell 26 female 23 in vitro study 23 Cells, Cultured 22 animal cell 21 male 21 Cell Proliferation 20 mesenchymal stem cell 19 unclassified drug 19 drug effect 18 pathology 18 Female 17 adult 16