IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-11-37998 Original Research Paper Expression of E- Cadherin, ? - Catenin and Vimentin in Premalignant and Malignant Lesions of Oral Cavity and Oropharynx - A 2-year study in a Tertiary Care Hospital GUMIN BITIN Dr. Dr. ALPANA LAISOM Dr. Dr. S. PRASHANTA SINGH Dr. November 2021 10 11 01 02