Antitumor activity of leaves of Himatanthus drasticus (Mart.) Plumel-Apocynaceae (janaguba) in the treatment of Sarcoma 180 tumor . Braz. J. Pharm. Sci. [Internet]. 2010 Jun. 1 [cited 2024 Jul. 22];46(2):199-203. Available from: https://journals.usp.br/bjps/article/view/10771