title: Relative inability of mother and child to convert phenylalanine of tyrosine--a possible cause of nonspecific mental retardation.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006579:Heterozygote; D006801:Humans; D008607:Intellectual Disability / Q000209:etiology* / Q000378:metabolism; D010649:Phenylalanine / Q000378:metabolism*; D010661:Phenylketonurias / Q000235:genetics / Q000378:metabolism*; D011247:Pregnancy; D014443:Tyrosine / Q000378:metabolism
chemical_list: D014443:Tyrosine; D010649:Phenylalanine