Morphological observation by inverted phase-contrast microscope (200×).

<p>SKOV-3, Ca Ski and HT-29 cells after treatment with 10 µg/mL of PW-M, PW-H, PW-E and PPWH-7 for 24 hours. Arrows indicate the formation of (A) apoptotic bodies; (B) condensed nuclei and (c) membrane blebbing as evidence of apoptosis. Images are representative of one of three similar experiments.