title: Radioactive labeling of alpha1-antitrypsin, trypsin, and chymotrypsin by reductive methylation: properties of the labeled derivatives.
mesh_terms: D000818:Animals; D002250:Carbon Radioisotopes; D002417:Cattle; D055598:Chemical Phenomena; D002621:Chemistry; D002918:Chymotrypsin / Q000378:metabolism; D006801:Humans; D007553:Isotope Labeling / Q000379:methods; D007700:Kinetics; D008745:Methylation; D010084:Oxidation-Reduction; D014316:Tritium; D014357:Trypsin / Q000378:metabolism; D000515:alpha 1-Antitrypsin / Q000378:metabolism
chemical_list: D002250:Carbon Radioisotopes; D000515:alpha 1-Antitrypsin; D014316:Tritium; D002918:Chymotrypsin; D014357:Trypsin