Humans priority journal unclassified drug human 344 nonhuman 278 article 275 controlled study 263 Animals 255 human cell 168 protein expression 146 animal cell 129 metabolism 117 Mice 104 mouse 93 protein function 91 animal 81 signal transduction 78 Protein Binding 75 Article 72 Female 65 Cell Line 64 chemistry 63 in vitro study 63 protein protein interaction 63 animal experiment 57 Signal Transduction 54 female 54 protein localization 54 Male 52 genetics 50