Our study had three goals: (1) to determine cell-surface Man expression by KCs using Man-specific LCA, (2) to investigate whether CD8+ cells, effector cells in oral mucosa GVHD, migrate to a Man-containing medium, and (3) to determine whether Man expression by KCs mediates binding of MBP-expressing CD8+ cells to KCs. This evidence concerns the gene MBP and graft versus host disease.