Andreeva А. А. RussiaSaratovSaratov State Medical University, Bolshaya Kazachia st., 112 Saratov, 410012polukonovanv@yandex.ru Author's articles Investigation of the Aristolochia clematitis extract by analyzing the activity of the Balbiani rings and the nuclear organizer in polytene chromosomes INVESTIGATION OF CYTOTOXIC AND CYTOSTATIC ACTIVITY OF FLAVONOID-CONTAINING EXTRACT OF KIRKAZONE OF LOMONOSOVIDE (ARISTOLOCHIA CLEMATITIS L.) IN EXPERIMENTS IN VITRO AND IN VIVO