Figure 1: Proteomics analysis of preputial gland of Indian commensal rat: Lane 2. Proteins were extracted from the preputial gland and 40 μg of protein was separated with the aid of 12 % SDS-PAGE and the total band from the whole cell extract was subjected into the mass spectrometry for proteins identifications. Lane 1 shows the purified for of α2u with the aid of gel filtration chromatography, and its purity was checked with aid of SDS-PAGE in order to identify the α2u isoforms.