Animals Female animal tissue female nonhuman 303 priority journal controlled study 259 article 247 animal experiment 225 Mice 139 mouse 139 animal cell 128 animal model 125 Male 119 male 119 protein expression 108 Rats 105 rat 105 animal 92 Rats, Sprague-Dawley 75 metabolism 72 Article 56 Mice, Inbred BALB C 53 unclassified drug 52 messenger RNA 49 signal transduction 49 Pregnancy 47 Humans 46 Ovary 45 progesterone 45