PRF1 and colitis: Thus, we examined the expression of memory markers (CD44 and Eomes), NK cell receptors (NKG2D and Ly49a), cytolytic molecules (FasL and Perforin), and pro-inflammatory cytokines (IFNγ and TNFα) in MLN-derived NK1.1+CD8+ T cells from Yeti/CD1d KO mice during DSS-induced colitis.