metabolism article 855 animal 766 Animals 665 nonhuman 615 controlled study 538 genetics 503 priority journal 442 physiology 430 human 421 Humans 388 Article 387 chemistry 385 unclassified drug 284 female 271 enzymology 254 male 239 Female 237 mouse 232 drug effect 227 animal cell 224 Male 217 animal experiment 216 signal transduction 205 Mice 200 gene expression regulation 194 growth, development and aging 190 protein expression 187 biosynthesis 179 drug effects 169