The percentage of PAS positive cells on epithelium were 0.77 ± 0.39%, 45.93 ± 2.60%, 69.17 ± 3.94%, 47.70 ± 5.48% and 68.80 ± 3.42% respectively in normal control group, wild-type group with asthma, recombinant mouse B7-H3 treatment group, TLR2-deficient mice group with asthma and TLR2-deficient mice with recombinant mouse B7-H3 treatment group (Fig. 2). Here, TLR2 is linked to asthma.