[The plants of Siberia and the Far East--sources in the search for drug preparations for oncological practice].

The results of the experimental selection of the agents modifiers of the biological reactions derived from plants of the Siberia and Far East were generalized. On the models of transplanted tumours of mice and rats there was shown the possibility of increasing the antitumour resistance of the organism during the use of the plant-derived agents under conditions of chemotherapeutic and surgical treatment.