female human 171 human cell priority journal controlled study 163 article 127 Humans 125 Female 116 protein expression 72 nonhuman 64 male 62 adult 60 Animals 56 animal cell 54 Male 52 metabolism 49 in vitro study 47 Mice 45 mouse 41 unclassified drug 41 Adult 39 clinical article 39 Article 38 animal experiment 35 cell proliferation 35 human tissue 32 trophoblast 30 Pregnancy 28 animal model 28 Cells, Cultured 27