Figure 4.

In vitro phagocytic activity of peritoneal macrophages from the ddY mouse (A and B), and NO production by C57BL/6 mouse macrophages (C). ddY mouse macrophages were treated with different doses of bamboo leaf extracts; control macrophages did not receive the extracts (A). (B) Macrophages were treated with different doses of unfractionated bamboo leaf extracts or different fractions (F-I, F-II, F-III and 1,3-β-glucanase-digested F-I) of extract, or PBS (control). (C) Macrophage NO production after treatment with PBS (control), 1,3-β-glucan from L. edodes (reference), unfractionated bamboo leaf extract, F-I, F-II or F-III at 100 μg ml⁻¹. Values represent means ± SD (n = 3). **P < 0.01 and *P < 0.05 (extracts versus control).