human 372 human cell protein expression 372 controlled study 332 Humans 282 article 278 priority journal 252 nonhuman 174 Animals 156 unclassified drug 138 animal cell 134 metabolism 112 mouse 112 female 106 signal transduction 104 Mice 102 cell proliferation 102 Female 96 Article 92 protein function 90 animal experiment 88 male 86 Cell Line, Tumor 84 apoptosis 82 Cell Line 74 Western blotting 72 animal model 70 in vitro study 68 Male 62 messenger RNA 62