Immune reagents for the detection of specific antigen-binding lymphocytes (ABL) with respect to different Salmonells antigens were developed. Rabbits were immunized with killed S. typhi and other salmonellae containing cross-reacting antigens, and the dynamics of the formation of ASL of each specificity was studied. Differences in the time of the appearance of ASL with receptors to thymus-independent (09, 12 or Vi) and thymus-dependent (Hd) antigens were studied. The relative content of ASL, determined with the use of immune reagents prepared from S. typhi antigens, was higher, on the whole, in rabbits immunized with S. typhi than in rabbits immunized with salmonellae containing one of cross-reacting antigens (S. enteritidis--09, 12; S. paratyphi C--Vi; S. virginia--Hd).
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