human 59 Article 57 Humans 46 controlled study 44 nonhuman 34 female 25 male 24 colony formation 23 cell proliferation 22 human cell 22 metabolism 22 genetics 21 Animals 18 animal 18 drug effect 18 adult 17 gene expression 17 unclassified drug 17 Female 16 Male 16 colony forming unit 15 pathology 15 Cell Proliferation 14 chemistry 14 human tissue 14 mouse 14 Western blotting 13 bacterial count 13 protein expression 13 animal experiment 12