the 6 patients experienced an early lichenoid phase 65-135 days after the graft and 3 of them progressed to a late sclerotic phase 200-340 days after the grafting damage to the basal membrane and to the keratinocytes of the basal layer and low spinous layers , and presence of epidermal regenerative cells were features common to the lichenoid phase of chronic gvhd and idiopathic lichen planus .
C0022567
basal layer
C0014520
epidermal