Studying epidermal sample

特許 係属中 The epidermis is composed of the outermost layers of cells in the skin,[1] "epi" in Greek meaning "over" or "upon", which together with the dermis forms the cutis. The epidermis is a stratified squamous epithelium,[2] composed of proliferating basal and differentiated suprabasal keratinocytes which acts as the body's major barrier against an inhospitable environment, by preventing pathogens from entering, making the skin a natural barrier to infection.[3] It also regulates the amount of water released from the body into the atmosphere through transepidermal water loss (TEWL).