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Sera from three groups of Brucella abortus infected cattle were examined in immunoblots with the following antigens: sodium dodecyl sulfate/mercapto ethanol (SDS/ME) extracts of two rough B. abortus strains (45 and RB51) and rough B. ovis, smooth lipopolysaccharides (SLPS) from B. abortus strain 99 and Y. enterocolitica 0:9, and a cytoplasmic extract from smooth B. abortus strain 19-S. The sera groups...
Yersinia outer protein (YOP) preparations from Y. enterocolitica and Y. pseudotuberculosis were used as antigens in immunoblots for the detection of Yersinia infections in experimentally and naturally infected ruminants. Sera from 9 groups of animals were used: (1) 51 sera from cattle which were false-positive in the standard brucellosis serological tests, (2) 52 sera from brucellosis-negative cattle,...
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