title: Evolutionary aspects of the biological action of cyclic nucleotides.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D000242:Cyclic AMP / Q000502:physiology; D006152:Cyclic GMP / Q000502:physiology; D009712:Nucleotides, Cyclic / Q000502:physiology*; D011494:Protein Kinases / Q000378:metabolism
chemical_list: D009712:Nucleotides, Cyclic; D000242:Cyclic AMP; D011494:Protein Kinases; D006152:Cyclic GMP