Recipient mice receiving allografts from G‐CSF +AMD3100 mobilization showed higher mortality associated with increased acute GVHD clinical scores and higher pathology scores in the intestine than those that received G‐CSF grafts, which may be related to the upregulation of CCR6 expression on both CD4+ and CD8+ T cells.130. This evidence concerns the gene CSF3 and graft versus host disease.