Medical Dictionary
uroporphyrin
noun uro·por·phy·rin \ˌyu̇r-ō-ˈpȯr-fə-rən\
Medical Definition of UROPORPHYRIN
: any of four isomeric porphyrins C40H38N4O16 which contain acetic acid and propionic acid groups on the porphin nucleus and are closely related to the coproporphyrins
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