CXCL9 and infection: The ability of B. anthracis to disseminate from initial sites of infection was examined by measuring B. anthracis CFU in the lungs, kidneys, spleen, and liver from moribund mice receiving CXCL9/CXCL10/CXCL11 neutralizing sera, as compared to those measured from paired, spore-challenged animals receiving control serum.