KI-67 AND MATRIX METALLOPROTEINASE-9 EXPRESSION IN THE FOLLICULAR CYST, KERATOCYSTIC ODONTOGENIC TUMOR, AND AMELOBLASTOMA Article Babichenko I.I., Semkin V.A., Usachev E.S., Katushkina A.A. Arkhiv Patologii. Vol. 75. 2013. P. 10-14