Figure 2
From: Fusion to chicken C3d enhances the immunogenicity of the M2 protein of avian influenza virus
SDS-PAGE analysis of proteins expressed by the expression vectors containing one or two copies of C3d fused to sM2 in E. coli, before and after induction. M: protein marker; lane 1: pGEX-C3d-L2-sM2 before induction; lane 2: pGEX-C3d-L2-sM2 after induction; lane 3: pGEX-C3d-sM2 before induction; lane 4: pGEX-C3d-sM2 after induction; lane 5: pGEX-C3d-L1-C3d-sM2 before induction; lane 6: pGEX-C3d-L1-C3d-sM2 after induction; lane 7: pGEX-C3d-L1-C3d-L2-sM2 before induction; lane 8: pGEX-C3d-L1-C3d-L2-sM2 after induction.