Characterization and expression of a cloned tetracycline resistance determinant from Campylobacter jejuni plasmid pUA466 Abstract A tetracycline resistance (Tcr) determinant previously cloned from the Campylobacter jejuni plasmid pUA466 (D. E. Taylor, J. Bacteriol. 165:1037-1039, 1986) was localized by restriction endonuclease mapping, subcloning, and Tn1000 insertion mutagenesis to a 2-kilobase region consisting of 1.8- and 0.2-kilobase