PTPRC and infection: Additionally, the proportion of NK1.1+/CD3- cells (NK population) was higher in WT lungs than in NKLAM-KO lungs at 48h post-infection WT 4.2% (4.2 ± 0.28 x 104 cells/106 CD45+ cells); KO 2.6% (2.6 ± 0.68 x 104 cells/106 CD45+ cells); p ≤ 0.05.