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Texture of the skin graft, with special reference to the hydration state of the stratum corneum.

The water contained in the superficial portion of the stratum corneum plays an important role in keeping the skin surface soft and smooth. In an attempt to study the true nature of the "texture" of grafted skin, in vivo water sorption-desorption tests were performed on grafts, on normal skin adjacent to grafts, and on normal skin surrounding the donor sites. The results showed that skin grafted to sites other than the face maintained a functional similarity to normal skin surrounding the donor site. However, in skin grafted to the face, the functions of the stratum corneum, as measured in terms of hydration state, increased, and this was associated with an improved water-holding capacity that probably results from the effect of abundant sebum and sweat excretion in adjacent skin. From these results it is suggested that the recipient site plays an important role in determining the difference in the function of the stratum corneum, i.e., the "texture" between grafts on the face and those on other sites.