nonhuman Article 304 genetics 263 controlled study 227 human 199 Humans 151 Animals 150 animal 148 metabolism 131 animal experiment 121 male 112 article 104 mouse 96 female 87 unclassified drug 87 gene expression 81 animal model 74 animal tissue 68 animal cell 65 adult 63 protein expression 54 Mice 52 Male 49 procedures 49 phenotype 47 phylogeny 46 physiology 45 priority journal 45 Female 43 chemistry 43