Reduced eosinophil infiltration in the lungs of mice fed with SL7207. Following the final OVA challenge, percentages of eosinophils in BALF cells were counted with the Liu staining. Data are represented as mean percentage ± SD, NS, normal saline control group (n = 22); OVA, OVA-sensitized and challenged group (n = 33) and OVA + SL7207, SL7207-treated group (n = 33). **P < 0·01 when compared with the OVA-sensitized control group.