title: Titres of antistreptolysin O in mothers of children affected with Down's syndrome.
mesh_terms: D000328:Adult; D000917:Antibody Formation; D004314:Down Syndrome / Q000209:etiology / Q000235:genetics* / Q000276:immunology; D005260:Female; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D013301:Streptolysins
chemical_list: D013301:Streptolysins