Inhibition of U87MG cell proliferation by polish honeys.

<p>U87MG cells were incubated for 24(graph A), 48 h (graph B) or 72 h (graph C) in the presence of the indicated concentrations (range 0.5% to 7.5% w/v) of different (H1–H4) honeys. The results are expressed as percentage viability in treated cell cultures compared to control. Asterisks denote statistically significant differences in the viability of the experimental groups compared to control obtained from the <i>Student's t-test</i> (* <i>p</i><0.05).