Porphobilinogen; chemical constitution.
D000818:Animals; D006801:Humans; D010860:Pigments, Biological; D011161:Porifera; D011162:Porphobilinogen; D011164:Porphyrias / Q000652:urine*
D010860:Pigments, Biological; D011162:Porphobilinogen
PIGMENTS; PORPHYRIA/urine in