Non-keratinized Non-keratinized surfaces must be kept moist by bodily secretions to prevent them from drying out. Cells of stratum corneum are sometimes without keratin and living. Examples of non-keratinized<unk>  include some parts of the lining of oral cavity, pharynx, conjunctiva of eye, upper one-third esophagus, rectum, external female genitalia, and vagina. Even non-keratinized surfaces, consisting as they do of keratinocytes, have a minor superficial keratinized layer of varying thickness, depending on the age of the<unk>  and the damage it has experienced. Keratinized Keratinized surfaces are protected from absorption by keratin protein. Keratinized<unk>  has keratin deposited on the surface which makes it impermeable and dry. Examples of keratinized<unk>  include skin, epidermis of the palm of the hand and sole of the foot, and the masticatory mucosa.
Stratified squamous epithelium
Athelia 
Inner enamel epithelium
Granulation tissue
Decoy cells
Ganglion cell layer
Keratinocyte
Enterochromaffin-like cell