Adamovich, A.V. et al. 2019. Experimental eva luation of the protective properties of the original chewing compositions in relation to the toxic effect of water soluble nicotos-containing substances of the tobacco on an immature organism. Experimental Biology and Biotechnology. 1 (Feb. 2019), 13–24. DOI:https://doi.org/10.33581/2521-1722-2019-1-13-24.