[Mechanism of the wound coverage and the formation of keratinous substance after microskin grafting].

Autologous microskin-grafts were observed morphologically sequentially after being grafted to 6 extensive burn patients. The epidermal cells of the microskin grew into the dermal layer of the allograft and crept over the surface along the newly formed granulation. Finally, the epidermal cells of the microskin covered the wound. The allograft may exert an inducing effect on the growth of epidermal cells. Keratinous substance was formed as a result of the degeneration of the epidermal cells of the microskin.