Fig. 2From: Assessment of cytotoxicity exerted by leaf extracts from plants of the genus Rhododendron towards epidermal keratinocytes and intestine epithelial cellsEffects of Rhododendron leaf extracts on the cell numbers of IEC6 (a) and HaCaT (b) cells after 24 h incubation at 37 °C with three different concentrations (5, 50, and 500 μg/mL) of leaf extracts as indicated. The total number of cells as determined by Draq5™ staining reflects the effects of leaf extracts on cell viability and adhesion since only monolayer-associated cells were stained and counted in this assay. Values are given as mean ± standard deviations from three independent experiments, each performed in triplicates. Statistical evaluation was performed by one way ANOVA-analysis; levels of significance are indicated as *for p < 0.05 Back to article page