Cytotoxicity effect of honey, bee pollen, and propolis from seven stingless bees in some cancer cell lines.

Our effort to find new material for anti cancer from natural resources leads us to focus on stingless bee products such as honey, bee pollen, and propolis. The products were from seven stingless bees named The stingless bee products were evaluated for their cytotoxicity effect on MCF-7, HeLa and Caco-2 cancer cell lines. This is the first time to be reported that the honey, ethanol extracts of bee pollen and propolis of displayed more potent cytotoxicity than other stingless bee products.