Effect of cactus pear extracts on the morphology of cervical cells. Immortalized cervical cells and cervical cancer cells were grown in the absence (control) or presence of different concentrations of cactus extracts. The photographs were taken on day 3 after the removal of medium containing floating cells.
Zou et al. Nutrition Journal 2005 4:25 doi:10.1186/1475-2891-4-25