Fig. 2From: Development and applications of a monoclonal antibody against caprine interferon-gammaExpression, purification and SDS-PAGE analysis of caprine rIFN-γ. The caprine rIFN-γ was expressed in E. coli strain BL21 and the proteins were visualized by Coomassie brilliant blue R-250. Lane 1: marker, lane 2: rIFN-γ before induction, lane 3: induced rIFN-γ by IPTG, lane 4: purified rIFN-γ; Arrow: the induced and purified rIFN-γ of 34.9 kDaBack to article page