(H) WT mice were i.v. injected with αGalCer or PBS (control) and activation of splenicILC3s was assessed by flow-cytometry as CD69 up-regulation at 6 h or 16 h after injection. Grey filled profile= ILC3 from αGalCer-injected mice; Empty profile= ILC3 from PBS-injected mice; Dotted line= CD45-cells. Right graph, percentage of CD69+ILC3s 6 h after injection of αGalCer (grey) or PBS (white). (n=3) *p<0.05 two-tailed unpaired t-test. 