Allen JH, Utley M, van Den Bosch H, Nuijten P, Witvliet M, McCormick BA, Krogfelt KA, Licht TR, Brown D, Mauel M, Leatham MP, Laux DC, Cohen PS. A functional cra gene is required for Salmonella enterica serovar typhimurium virulence in BALB/c mice. Infect Immun. 2000 Jun; 68(6):3772-5.