Effect of Air Drying and Dressings on the Surface of a Wound
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TL;DR
It has been pointed out that the normal dry scab on a wound exposed to the air includes a superficial part of the dermis, and it was suggested that this is because the exposed dermal tissue is dehydrated.
Abstract
IT has been pointed out that the normal dry scab on a wound exposed to the air includes a superficial part of the dermis, and it was suggested that this is because the exposed dermal tissue is dehydrated1. Epidermis migrates below the dehydrated fibrous tissue where there is sufficient moisture for the cells to live. If the surface of the wound is deliberately kept moist by covering the wound with an occlusive film, the epidermis will migrate over the surface of the dermis. In this latter event migration of the epidermis is twice as rapid as when it is forced to pass through the fibrous tissue.