cyclic amp Cyclic AMP 90 nonhuman 76 Support, Non-U.S. Gov't 62 priority journal 58 Animal 56 article 50 animal experiment 38 Rats 32 animal cell 32 rat 32 Kinetics 28 radioisotope 28 Male 26 in vitro study 26 Mucor 24 fungus 24 Protein Kinases 22 Female 20 Rats, Inbred Strains 20 Enzyme Activation 18 adenylate cyclase 18 endocrine system 18 protein kinase 16 3',5'-Cyclic-Nucleotide Phosphodiesterase 14 Adenylate Cyclase 14 Fungi 14 Receptors, Adrenergic, beta 14 cAMP 14 cyclic gmp 14