Separation of serum bactericidal and opsonizing activities for Haemophilus influenzae type b.
When assay conditions permitted bacterial growth, immune serum had no bactericidal activity for Haemophilus influenzae but promoted rapid phagocytic killing of this organism by human leukocytes.
D001770:Blood Bactericidal Activity; D006193:Haemophilus influenzae / Q000276:immunology*; D006386:Hemagglutination Tests; D006801:Humans; D007106:Immune Sera; D009895:Opsonin Proteins; D010587:Phagocytosis; D014465:Ultrasonics
D007106:Immune Sera; D009895:Opsonin Proteins