CD34 and graft versus host disease: Supplementary Table 4 shows that the number of CD34+ cells in graft-BM was significantly different between the skin aGVHD and no aGVHD groups (p = 0.043). Furthermore, consistent with the results of Figure 1, the number of MAIT cells in infused grafts in patients with gut aGVHD was significantly lower than that in patients without GVHD (G-PB: p = 0.003; Grafts: p = 0.005; Supplementary Table 4).