title: Serotonin levels and intelligence in trisomy-21 type Down's syndrome.
mesh_terms: D002648:Child; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000097:blood* / Q000188:drug therapy; D005260:Female; D006801:Humans; D007360:Intelligence; D007361:Intelligence Tests; D008297:Male; D009048:Motor Skills; D011581:Psychological Tests; D012701:Serotonin / Q000097:blood* / Q000627:therapeutic use; D014314:Trisomy
chemical_list: D012701:Serotonin