(A) Depletion of Nk1.1+ cells in NK-T cell deficient CD1d−/− mice further reduces the amount of long term tolerant mice (dual Ab vs. dual Ab+aNK p=0.0428,*; control vs. dual Ab+aNK, p=0.0079,**) (B) Beige mice (Lystbg/J) are resistant to tolerance induction by dual antibody treatment. Transfer of functional NK cells, isolated from B6 Splenocytes, restores the tolerizing effect of dual antibody treatment (p=0.0342,*)