Fig. 6

Proliferation of cells treated with Brazilian red propolis. a Line graph showing proliferation of treated and untreated cells using different concentrations of Brazilian red propolis at various time points. Values are expressed as mean number of cells ± standard error as indicated by the error bars. There was no significant difference between the mean number of cells of the control and treatments. b Polynomial trend line showing the concentration-dependent trend of the proliferation of cells treated with Brazilian red propolis at 48 h. Values are expressed as mean number of cells ± standard error as indicated by the error bars