Cytological features of buccal epithelium in patients of various ages E.A. Sementsova, L.G. Polushina, E.V. Mandra, V.V. Bazarnyi and J.V. Mandra BIO Web Conf., 22 (2020) 01003 Published online: 06 July 2020 DOI: 10.1051/bioconf/20202201003