A new precipitating antigen-antibody system [(Pennsylvania antigen) in human serum.
D000328:Adult; D000741:Anemia, Aplastic / Q000276:immunology; D000937:Antigen-Antibody Reactions; D000941:Antigens / Q000032:analysis*; D002869:Chromosome Aberrations / Q000276:immunology*; D025063:Chromosome Disorders; D004314:Down Syndrome / Q000276:immunology*; D005260:Female; D006402:Hematologic Diseases / Q000276:immunology*; D006801:Humans; D007231:Infant, Newborn; D007938:Leukemia / Q000276:immunology; D008297:Male; D011234:Precipitins / Q000032:analysis*; D013696:Temperature; D013789:Thalassemia / Q000276:immunology; D014470:Umbilical Cord / Q000098:blood supply
D000941:Antigens; D011234:Precipitins