metabolism protein expression controlled study 291 nonhuman 257 Animals 240 animal 236 priority journal 205 human 196 Humans 188 Article 184 genetics 148 animal cell 147 article 143 unclassified drug 138 mouse 135 female 131 Mice 121 animal experiment 118 Female 117 human cell 105 protein function 103 signal transduction 103 physiology 98 drug effects 87 cytology 82 male 82 animal tissue 80 Male 78 Western blotting 77 pathology 77