Growth deficiencies of Neisseria meningitidis pfs and luxS mutants are not due to inactivation of quorum sensing av Heurlier, K, Vendeville, A, Vendeville, A, Halliday, N, Halliday, N, Green, A, Green, A, Winzer, K, Winzer, K, Tang, C, Tang, C, Hardie, K, Hardie, K