Hamid Madanchi, Hossein Honari, Mohammad Sadraeian, and Mahdi Hesaraki, “Fusion of CtxB with StxB, Cloning and Expression of in Esherichia coli: A challenge for Improvement of Immune Response Against StxB: Cloning and coexpression of ctB-stxB fusion in E. coli”, Iran J Pharm Sci, vol. 7, no. 3, pp. 185–190, Jul. 2011.