Kaewta Rattanapisit, Seong HeeBhoo, Tae-Ryong Hahn, Bum-Soo Hahn and Waranyoo Phoolcharoen 2017. Expression and purification of cholera toxin fragment B (CTB) in E. coli. Journal of Innovations in Pharmaceutical and Biological Sciences. 4, 1 (Jan. 2017), 66–69.