When analyzing the GVHD scores of the three groups mentioned above, a similar pattern emerged where the mean score of the BM only group was 0.08 compared to the BM + T group which was 3.04 (p < 0.0001) and the BM + T + Id1 ILC2 group was reduced to 1.58 (p < 0.0001) (Fig. 3B). Here, ID1 is linked to graft versus host disease.