SDS-PAGE of the Purified Sf200 Lane (1) and the cell lysate of E. coli harboring the recombinant plasmid pET-32a-Sf200 (38kDa approx.) after induction with IPTG containing E. coli BL21 (Lane 4), E. coli Rosetta strain (Lane 5), before induction with IPTG (Lane 2), pET-32a (+) vector control (Lane 3) while the proteins standards are showed on right side of panel.