Animals 78 animal animal tissue controlled study mouse nonhuman 78 physiology metabolism 65 priority journal 62 Mice 58 animal experiment 57 Article 50 male 48 Male 36 animal cell 36 C57BL mouse 28 Mice, Inbred C57BL 28 Mice, Transgenic 27 animal model 27 transgenic mouse 27 article 26 genetics 26 hippocampus 24 gene expression 23 signal transduction 23 cytology 22 drug effects 21 female 21 Hippocampus 20 protein expression 20