Immunity to disease caused by Hemophilus influenzae type b. II. Specificity and some biologic characteristics of "natural," infection-acquired, and immunization-induced antibodies to the capsular polysaccharide of Hemophilus influenzae type b.

Agammaglobulinemia/immunology Animals Antibodies/analysis Antibody Formation Antibody Specificity Arthritis/immunology Blood Bactericidal Activity Child, Preschool Complement System Proteins Empyema/immunology Erythrocytes/immunology Female Haemophilus Infections/immunology Haemophilus influenzae/immunology Hemagglutination Inhibition Tests Hemagglutination Tests Humans Immunity Immunization Infant Isoantibodies/analysis Male Meningitis/immunology Mice Pericarditis/immunology Polysaccharides, Bacterial Rabbits

Antibodies Isoantibodies Polysaccharides, Bacterial Complement System Proteins