Receptors, Adrenergic, beta beta adrenergic receptor 44 Animal 40 animal experiment 40 Support, Non-U.S. Gov't 38 nonhuman 36 propranolol 32 Rats 30 priority journal 30 rat 30 Male 24 article 24 Immunoglobulin G 20 Rats, Inbred Strains 20 animal cell 20 radioisotope 20 Female 18 Propranolol 18 isoprenaline 18 Cyclic AMP 16 Isoproterenol 16 Mice 16 Receptors, Adrenergic, alpha 16 immunoglobulin g 16 Mice, Inbred BALB C 14 Norepinephrine 14 Pineal Gland 14 alpha adrenergic receptor 14 autonomic nervous system 14 cyclic amp 14