epidermis is the outermost layer of skin and is primarily comprised of keratinocytes cells that produce the protein keratin

medical medicine skin anatomy health body epidermis disease human pain dermatology woman patient tissue melanin care beauty healthy female person gland problem hair dry rash age section damage face young sunburn skincare senior beautiful aging pores sun wrinkles detail close portrait microscopy micrograph paraffin pink photomicrograph epithelium cytology histological