Fig. 1

Effect of beta-(1→3)(1→6)-glucan from yeast on the proliferation of the primary NK cells. The figure shows the percentage variation of NK proliferation after 48 h incubation of (A) NK cells with different β-glucan concentrations (0.1–1 − 10 and 100 µg/ml) without IL2 and (B) NK cells with different β-glucan concentrations (0.1–1 − 10 and 100 µg/ml) with IL2 (70 U/ml) compared to untreated NK cells (control). The proliferation was measured after 4 h incubation of untreated- and with β-glucan treated NK cells using XTT by 450 nm. The results were presented in three independent experiments. Statistical significance was determined by one-way ANOVA. * p < 0.05; ** p < 0.01; *** p < 0.001; **** p < 0.0001