The present study tested the potential anticancer effects ofaqueous extract of PE in four ways:
(1) against cancer cell lines,
(2) in vitro apoptosis,
(3) mouse skin tumourigenesis
and (4) in vitro invasiveness. The PE extract at 50–100 μg/mL signifi cantly inhibited cell growth of six
human cancer cell lines, A549 (lung), HepG2 (liver), HeLa (cervical), MDA-MB-231 (breast), SK-OV3 (ovarian)
and SW620 (colorectal).