title: Biochemical factors in mental retardation.
mesh_terms: D006916:5-Hydroxytryptophan / Q000032:analysis / Q000097:blood; D000818:Animals; D001923:Brain Chemistry; D004035:Diet Therapy; D005260:Female; D006168:Guinea Pigs; D000882:Haplorhini; D006801:Humans; D007223:Infant; D008607:Intellectual Disability; D007361:Intelligence Tests; D008297:Male; D008661:Metabolism, Inborn Errors; D008995:Monoamine Oxidase / Q000032:analysis; D010649:Phenylalanine / Q000097:blood / Q000378:metabolism; D010661:Phenylketonurias / Q000201:enzymology* / Q000235:genetics / Q000628:therapy; D051381:Rats; D012701:Serotonin / Q000378:metabolism; D014364:Tryptophan / Q000378:metabolism; D014443:Tyrosine / Q000097:blood
chemical_list: D012701:Serotonin; D014443:Tyrosine; D010649:Phenylalanine; D014364:Tryptophan; D006916:5-Hydroxytryptophan; D008995:Monoamine Oxidase