Fig. 3From: Escherichia coli recombinant sperm immobilizing factor RecX as a potential vaginal contraceptiveSDS-PAGE analysis of purified RecX: Lane ‘UI’, lysate of un-induced cells from E. coli BL21; lane ‘I’, cell lysate of induced cells from E. coli BL21; lane ‘E40’, fractions containing expressed RecX obtained at 40 mM; lane ‘E50’, fractions containing expressed RecX obtained at 50 mM of imidazole.Back to article page