Purpose of the study. The study of the periodont-protective properties of the complex of a mixture of active metabolites of cholecalciferol - 1. 25 (OH)2D3 and 24. 25(OH)2D3 with a synthetic analogue of vitamin K - vikasol in experimental periodontitis in rats. https://lockdownsecuritycanada.shop/product-category/axxess-dsp-t-harness/