Receptors, Cell Surface nonhuman 52 priority journal 48 article 42 human 36 Animals 34 Humans 30 animal cell 30 Animal 28 Female 28 endocrine system 28 rat 28 Male 26 Rats 24 Support, Non-U.S. Gov't 24 controlled study 24 unclassified drug 24 animal experiment 22 radioisotope 22 Protein Binding 20 female 18 Membrane Glycoproteins 16 Mice 16 Prolactin 16 cell surface receptor 16 central nervous system 16 protein expression 16 Recombinant Proteins 14 metabolism 14 Human 12