Animals Cells, Cultured animal cell article nonhuman 62 rat Rats 60 controlled study 56 priority journal 52 Rats, Sprague-Dawley 36 female 33 Female 31 cell culture 27 protein expression 22 animal 19 animal experiment 19 metabolism 19 Animalia 18 animal tissue 18 Granulosa Cells 17 cell proliferation 17 granulosa cell 17 Humans 16 Follicle Stimulating Hormone 15 cytology 15 enzyme activation 15 estradiol 15 follitropin 15 protein function 14 Mice 13