protein expression protein function nonhuman 242 priority journal 230 article 219 Animals 214 controlled study 210 human 185 Humans 161 unclassified drug 154 animal cell 115 metabolism 103 signal transduction 98 mouse 93 Mice 86 human cell 81 animal 80 protein localization 73 Female 71 animal experiment 68 protein protein interaction 67 protein analysis 65 Signal Transduction 64 female 62 genetics 59 protein binding 56 animal tissue 54 Article 52 animal model 50 apoptosis 50