title: Biochemistry of mental retardation.
mesh_terms: D000368:Aged; D002956:Citrulline / Q000097:blood; D005260:Female; D005998:Glycine / Q000097:blood; D006639:Histidine / Q000097:blood; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000378:metabolism*; D008661:Metabolism, Inborn Errors; D010661:Phenylketonurias / Q000150:complications
chemical_list: D002956:Citrulline; D006639:Histidine; D005998:Glycine