[Immunological characteristics of the cellular components of Brucellae]

Low-molecular glucopeptide stimulated protection against brucellosis without the accumulation of complete antibodies and the increase of skin sensitivity. Water-insoluble lipopolysaccharide, though inducing the intensive synthesis of circulating antibodies and moderately pronounced delayed hypersensitivity, did not stimulate protection against brucellosis. This suggests that the cellular mechanisms and among them the system of mononuclear phagocytes, play the leading role in immunity to brucellosis.