title: Histamine formation from 14C-L-histidine in mastocytosis [proceedings].
mesh_terms: D005260:Female; D006632:Histamine / Q000096:biosynthesis*; D006639:Histidine / Q000378:metabolism*; D006801:Humans; D007093:Imidazoles / Q000652:urine; D008875:Middle Aged; D014582:Urticaria Pigmentosa / Q000378:metabolism*
chemical_list: D007093:Imidazoles; D006639:Histidine; D006632:Histamine