Keratinocyte Cell The keratin-producing cells of the epidermis. They are the predominant cells of the epidermis that form in the deep basal layer of the stratified epithelium of the epidermis. They gradually migrate upward to the cornified layer of the epidermis undergoing characteristic changes. Keratinocytes Keratinocyte KERATINOCYTE C0022567 C12589 The keratin-producing cell of the epidermis that forms in the deep basal layer of the stratified epithelium. Keratinocyte CDISC Keratinocyte Keratinocyte Skin Squamous Cell Clinical Data Interchange Standards Consortium Terminology CDISC SDTM Terminology CDISC SDTM Specimen Type Terminology