title: Oscillatory phenomena in biological systems.
mesh_terms: D001683:Biological Clocks; D002477:Cells / Q000378:metabolism*; D000242:Cyclic AMP / Q000378:metabolism; D005246:Feedback; D007700:Kinetics; D008433:Mathematics; D009243:NAD / Q000378:metabolism
chemical_list: D009243:NAD; D000242:Cyclic AMP