Dental The epithelium which has only keratin layer, no nuclei is: A Parakeratinized epithelium. B Nonkeratinized epithelium. C Orthokeratinized epithelium. D None of the Above. 💡 Explanation The epithelium which has only keratin layer, no nuclei is: ✓ Correct Answer: C. Orthokeratinized epithelium.