Figure 1From: Prokaryote-expressed M2e protein improves H9N2 influenza vaccine efficacy and protection against lethal influenza a virus in miceConstruction of plasmids and purification of 1×M2e or 4×M2e protein. (A) The synthetic 1×M2e or 4×M2e genes from A/chicken/Vietnam/27262/09 (H5N1) were cloned into pRSETA vector. (B) Expression protein 1×M2e protein (17 kDa) and (C) 4×M2e protein (68 kDa) from E. coli cell, DE3.Back to article page