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[Character of the immune response in guinea pigs following immunization with brucellosis protective antigen].

In studying guinea pigs immunized with brucella protective antigen and the immunological response in them it was found that the antigen could be determined for 30 days by the method of fluorescent antibodies in the cells of the lymph nodes and the spleen following its intravenous injection. The optimal immunizing dose was 0.6 mg; in difference from a dose of 2 mg it produced an earlier and a more pronounced humoral effect. The phagocytic activity of the peritoneal macrophages of guinea pigs immunized with low doses was much more intensive than of those immunized with high doses of the antigen. Brucella protective antigen in a dose of 2 mg produced a disturbance of the carbohydrate metabolism in phagocytes, this influencing negatively their phagocytic function.