Bauer, F. J., Rudel, T., Stein, M., & Meyer, T. F. (1999). Mutagenesis of the Neisseria gonorrhoeae porin reduces invasion in epithelial cells and enhances phagocyte responsiveness. Molecular Microbiology, 31(3), 903-913. doi:10.1046/j.1365-2958.1999.01230.x.