title: A new assay of cyclic nucleotide phosphodiesterase; its application to human serum.
mesh_terms: D000328:Adult; D000818:Animals; D001921:Brain / Q000201:enzymology; D002852:Chromatography, Ion Exchange; D000242:Cyclic AMP; D006152:Cyclic GMP; D005909:Glioblastoma / Q000201:enzymology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology; D008297:Male; D008722:Methods; D008875:Middle Aged; D010300:Parkinson Disease / Q000201:enzymology; D010726:Phosphodiesterase Inhibitors; D010727:Phosphoric Diester Hydrolases / Q000097:blood*; D011817:Rabbits; D051381:Rats; D012116:Resins, Plant; D012911:Snakes; D013696:Temperature; D013806:Theophylline / Q000494:pharmacology; D013997:Time Factors; D014316:Tritium; D014688:Venoms
chemical_list: D010726:Phosphodiesterase Inhibitors; D012116:Resins, Plant; D014688:Venoms; D014316:Tritium; D013806:Theophylline; D000242:Cyclic AMP; D010727:Phosphoric Diester Hydrolases; D006152:Cyclic GMP; D008274:Magnesium