Animals animal 264 chemistry metabolism nonhuman 157 article 132 controlled study 123 human 116 Humans 114 priority journal 102 unclassified drug 94 genetics 84 Article 82 animal cell 65 female 56 mouse 55 Mice 53 physiology 47 rat 46 Female 44 human cell 44 amino acid sequence 43 animal experiment 43 Male 42 Rats 42 male 42 Amino Acid Sequence 41 drug effects 40 Molecular Sequence Data 37 molecular genetics 37