The IL-10-deficient NK cell Ncr1-iCre-Il10fl/fl mouse strain and wt B6 mice were infected with Lm peroral (PO) or coinfected with S. pneumoniae intratracheal (IT) + Lm PO, and the spleens, livers, and lungs were harvested at 3 days post-infection. This evidence concerns the gene NCR1 and infection.