title: Determination of histidine decarboxylase activity.
mesh_terms: D002247:Carbon Isotopes; D002262:Carboxy-Lyases / Q000032:analysis*; D006632:Histamine / Q000032:analysis; D006639:Histidine / Q000032:analysis*; D008722:Methods
chemical_list: D002247:Carbon Isotopes; D006639:Histidine; D006632:Histamine; D002262:Carboxy-Lyases