THE PROLIFERATIVE ACTIVITY OF TUMOR CELLS AND THE DISTRIBUTION OF SOX2+ PLURIPOTENT STEM CELLS IN VARIOUS HISTOLOGICAL TYPES OF AMELOBLASTOMA Статья Babichenko I.I., Rybalskaya V.F., Tsimbalist N.S., Semkin V.A. Arkhiv Patologii. Том 80. 2018. С. 21-26