Demkovych, A.Y., Bondarenko, Y.I. and Нolovata T.K. 2019. Pathomorphological changes in the periodontal complex tissues in the period of experimental bacterial-immune periodontitis chronization. Zaporozhye мedical journal. 6 (Feb. 2019). DOI:https://doi.org/10.14739/2310-1210.2018.6.146196.