"Study in CD200R-/- mice revealed that CD200R deficiency leads to enhanced bacterial burden in neutrophils. CD200R-deficient neutrophils display significantly reduced reactive oxygen species production (ROS) suggesting that CD200R-mediated ROS production in neutrophils is necessary for limiting F.tularensis colonization and proliferation. Overall data show that CD200R promotes the antimicrobial properties of neutrophils."xsd:string