Biological properties and clinical application of propolis. IV. The action of ethanol extract of propolis (EEP) on cells cultured in vitro.

An increase of total cell number was shown in the cell culture in vitro under the influence of ethanol extract of propolis (EEP). Addition of EEP to the nutrient medium of the cells caused a strong activation of mitoses. Besides, distinctly intensified metabolism of these cells expressed by a strong activation of NADH2-reductase was also observed.