ytotoxic effect of n-hexane insoluble fraction obtained from kloroform extract of kembang bulan leaves [Tithonia diversifolia (Hemsley) A. Gray] on HeLa cells and mechanism detection by Hoechst 33342 - Zany sari Vindawati, Rita Rakhmawati, Mae S.H Wahyuningsih, Rul Afiyah Syarif, (Journal of the Medical Sciences (Berkala ilmu Kedokteran), 2015)