Using the B10LP to C57Bl skin graft system, MSC (0.03 and 3.0 g kg (-1) applied orally) acted in favour of restoring the immune function.
2,6-dimethoxy-p-benzoquinone (DMBQ), applied in equivalent doses (0.012 and 1.2 mg kg (-l) ), did not shorten the rejection time of skin grafts.