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The results of serological examinations of chickens after their experimental immunization with inactivated Campylobacter jejuni vaccine given subcutaneously (two groups aged from 10-18 days and 21-28 days) or infected orally on day 3 or broilers and laying hens infected under field conditions have been presented. The level of specific antibodies in sera of immunized chickens (OD ELISA mean values...
The aim of the study was to develop a sensitive and specific ELISA for the detection of LT enterotoxin in E. coli strains. The test was based on the antitoxic antibodies obtained from rabbits immunized with В subunit of cholera toxin (CT). The toxin was structurally closely related with LTB of E. coli. CTB was expressed in a V. cholerae strain harboring a plasmid with a ctxB gene. The toxin was isolated...
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