Immunogenetic studies on mongolism.
D000293:Adolescent; D000328:Adult; D001789:Blood Group Antigens; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000235:genetics* / Q000276:immunology*; D006386:Hemagglutination Tests; D006801:Humans; D007122:Immunoelectrophoresis; D007518:Isoantibodies; D008875:Middle Aged; D014314:Trisomy; D005719:gamma-Globulins / Q000032:analysis*
D001789:Blood Group Antigens; D007518:Isoantibodies; D005719:gamma-Globulins