CD79A and graft versus host disease: After analyzing the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways of the DEGs, we demonstrated that the top pathways in the PU were primarily related to infection, graft versus host disease, allograft rejection, chemokine signaling, immune cell differentiation, IgA production, natural killer cell-mediated cytotoxicity, and leukocyte trans-endothelial migration (Figure S2D and Table S5).