[The antigenic characteristics of Salmonella typhi L forms]

The study of the possibility of detecting the specific antigens of S. typhi L forms has revealed that out of three destructive methods under study (osmotic lysis, freezing-thawing, sonication) only ultrasonic disintegration has proved to be effective for S. typhi L forms. Three specific fractions capable of interacting only with specific antibodies to S. typhi L forms have been revealed in the course of chromatographic separation of the soluble antigenic complex of S. typhi stable L forms and the subsequent analysis of the fractions thus obtained in the enzyme immunoassay.