- A pneumococcal pilus influences virulence and host inflammatory responses. Barocchi, M.A., Ries, J., Zogaj, X., Hemsley, C., Albiger, B., Kanth, A., Dahlberg, S., Fernebro, J., Moschioni, M., Masignani, V., Hultenby, K., Taddei, A.R., Beiter, K., Wartha, F., von Euler, A., Covacci, A., Holden, D.W., Normark, S., Rappuoli, R., Henriques-Normark, B. Proc. Natl. Acad. Sci. U.S.A. (2006)