Ethanolic neem (Azadirachta indica) leaf extract induces apoptosis in the hamster buccal pouch carcinogenesis model by modulation of Bcl-2, Bim, caspase 8 and caspase 3 - Subapriya, R; Bhuvaneswari, V; Nagini, S (Asian Pac J Cancer Prev, 2005)