“PHYTOCHEMICAL STUDIES AND IN VITRO CYTOTOXICITY SCREENING OF PIPER BETLE LEAF (PBL) EXTRACT” (2010) International Research Journal of Pharmacy, 1(12), pp. 387–394. Available at: https://irjponline.org/index.php/irjp/article/view/2267 (Accessed: 24 August 2026).