Stable Surface Expression of a Gene for Helicobacter pylori Toxic Porin Protein with pBAD Expression System / 华中科技大学学报（医学）（英德文版）

successive passages could express Hope protein, while only 1 from 5 E. coli colonies that contained lac operon-regulated plasmid encoding hopE gene could express HopE. Indi-rect immunofluorescence confirmed the expression of HopE on E. coli cell surface.