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[Erythrocyte diagnostica made from salmonellal phagolysates].

For the first time O antigens obtained from phagolysates were proved to be suitable for use as material for the production of highly specific erythrocyte diagnostic preparations. O antigens obtained from Salmonella by two methods, i.e. phage disintegration and Grasset's method, were subjected to comparative chemical analysis and found to have no essential difference. Nevertheless, the sensitizing potency of O antigens obtained from phagolysates were experimentally shown to be 3 times greater than that of O antigens obtained by Grasset's method. The optimum sensitizing doses established in the passive hemagglutination test for O antigens obtained by both methods indicated that these antigens were highly sensitive and specific.