Receptors, Estrogen 58 Female 42 Rats 36 article 36 nonhuman 34 rat 34 Estradiol 32 estrogen receptor 32 priority journal 30 Animals 26 estradiol 26 animal cell 24 female 24 Animal 22 animal experiment 22 controlled study 22 endocrine system 20 estradiol h 3 20 human 18 radioisotope 18 Receptors, Progesterone 16 Support, Non-U.S. Gov't 16 estrogen 16 Estrogens 14 Humans 14 Mice 14 animal model 14 mouse 14 cell proliferation 12 prolactin 12