Keratinocytes are the cells present in the outer layers of the skin. They begin differentiating from the innermost layer while migrating towards the outermost layers. The inner layer cells are often referred to as the epidermal stem cells. Present within direct contact with the environment, these cells play a crucial role in establishing a skin barrier, initiating immune response, inj... https://www.kosheeka.com/human-skin-epidermal-keratinocytes-guardians-of-epidermis/