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SDS-PAGE (12%) analysis of urea-extracted OMPs from Salmonella serovar Typhimurium (wild). Lanes 1 and 2 show 15- and 45-μg OMP fractions, respectively. Lane M, molecular weight markers: phosphorylase b, bovine serum albumin, ovalbumin, carbonic anhydrase, soybean trypsin inhibitor, and lysozyme. The sizes of the marker bands (in thousands) are shown at the left.
