TNFRSF1A and infection: Naïve TNFR1-KO, TNFR1-M and TNFR1-T KO mice showed a lower frequency of NKT cells, however at 2-weeks after infection only TNFR1 KO mice maintained the deficiency of NKT because mice with partial deletion of TNFR1 recovered the ability to recruit this cell subpopulation (Fig. 3b).