Intermittent alcaptonuria.
D000474:Alkaptonuria / Q000652:urine; D002648:Child; D006713:Homogentisic Acid / Q000652:urine; D006801:Humans; D008297:Male; D010105:Oxygenases / Q000172:deficiency; D010649:Phenylalanine / Q000378:metabolism; D014443:Tyrosine / Q000378:metabolism
D014443:Tyrosine; D010649:Phenylalanine; D010105:Oxygenases; D006713:Homogentisic Acid