Prolonged acceptance of allogeneic skin grafts was induced by adoptive transfer of donor FLDCs. Recipient B6 mice were transplanted with BALB/c (5-8 mice/group; A) or C3H skin (3-4 mice/group; B) on the dorsal thorax on day 10. Graft survival was followed daily by visual inspection. Rejection was defined as a complete loss of viable epidermal graft tissue.