drug receptor binding nonhuman 134 priority journal 94 rat 92 animal cell 82 article 80 Rats 74 controlled study 62 radioisotope 62 Animals 60 pharmacokinetics 56 unclassified drug 56 Animal 50 animal experiment 48 Male 46 Support, Non-U.S. Gov't 46 Female 40 endocrine system 40 Rats, Inbred Strains 38 central nervous system 36 human 36 Humans 32 metabolism 32 animal 28 drug mechanism 28 dexamethasone 26 dose response 26 drug efficacy 26 Receptors, GABA-A 22 Receptors, Glucocorticoid 22