Fig. 1
Effect of O3BC and pollen on the viability of hNECs. a Cell viability assay showing decreased viability in hNECs exposed to 50 μg/ml O3BC and 25 μg/ml O3BC + 200 μg/ml pollen; exposure to 25 μg/ml O3BC and 200 μg/ml pollen progressively decreased cell viability to 74.16 ± 2.74%, and the survival rate of cells treated with O3BC concentrations higher than 50 μg/ml was negatively correlated with the concentration of O3BC (r = − 0.850, p = 0.00001). b Cell viability assay showing no change in viability in hNECs exposed to different concentrations of pollen