FIG. 6.
Agarose gel electrophoresis of PstI digests of amplified omp2 gene fragments from Brucella field strains that resemble Rev.1 according to biochemical biotyping. The figure shows the uncut 282-bp DNA and the larger, PstI-digested DNA fragment. The smaller, 44-bp DNA fragment is not shown. Lanes: 1, B. melitensis strain 134172; 2, B. melitensis strain 116375; 3, B. melitensis strain 124596; 4, B. melitensis vaccine strain Rev.1 (subcutaneous lot); 5, B. melitensis vaccine strain Rev.1 (subcutaneous lot) (uncut); M, molecular size ladder (in base pairs); 6, B. melitensis vaccine strain (ocular lot) (uncut); 7, B. melitensis vaccine strain Rev.1 (ocular lot); 8, B. melitensis strain 225877; 9, B. melitensis strain 226390; 10, B. melitensis strain 226997; 11, B. melitensis strain 223713.