title: Porphyrin metabolism in Down's syndrome.
mesh_terms: D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000378:metabolism*; D005243:Feces / Q000032:analysis; D005260:Female; D006400:Hematocrit; D006801:Humans; D007223:Infant; D007360:Intelligence; D008111:Liver Function Tests; D008297:Male; D011166:Porphyrins / Q000032:analysis / Q000378:metabolism*
chemical_list: D011166:Porphyrins