IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-2-46331 Original Research Paper A Study On Expression Of Ki-67 In Oral Cavity Lesions And Correlation Of Ki-67 Score With Degree Of Differentiation Of Oral Squamous Cell Carcinoma Singh Dr. Shilpa Jalan Dr. February 2023 12 2 01 02