title: Serum dopamine-beta-hydroxylase levels in Down's syndrome.
mesh_terms: D000293:Adolescent; D000328:Adult; D001321:Autistic Disorder / Q000201:enzymology; D002648:Child; D002675:Child, Preschool; D004299:Dopamine beta-Hydroxylase / Q000097:blood*; D004314:Down Syndrome / Q000201:enzymology*; D005260:Female; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000201:enzymology; D007457:Iodine Radioisotopes; D008297:Male; D011863:Radioimmunoassay
chemical_list: D007457:Iodine Radioisotopes; D004299:Dopamine beta-Hydroxylase