Cyclic nucleotides.

Adenylyl Cyclases/metabolism Animals Calcium/pharmacology Catecholamines/pharmacology Cell Division Cell Line Cell-Free System Cyclic AMP/biosynthesis,metabolism,urine Cyclic GMP/biosynthesis,metabolism,urine Extracellular Space/metabolism Glucagon/pharmacology Glycogen/biosynthesis,metabolism Guanylate Cyclase/metabolism Hormones/pharmacology Humans Interferon Inducers Parathyroid Hormone/pharmacology Phosphoric Diester Hydrolases/metabolism Protein Kinases/metabolism Receptors, Cell Surface Structure-Activity Relationship

Catecholamines Hormones Interferon Inducers Parathyroid Hormone Receptors, Cell Surface Glycogen Glucagon Cyclic AMP Protein Kinases Phosphoric Diester Hydrolases Adenylyl Cyclases Guanylate Cyclase Cyclic GMP Calcium