showed a trendP < 0.01
The excessive release of IL-22 in lung tissue may stimulate the expression of RegIIIγ in intestinal tissue via the circulation Compared with the normal group, the expression of IFN-γ in the lungs and intestines of the RSV-infected group showed a trend of first increasing and then decreasing, reaching a maximum value one the third day after infection, with a significant difference ( P < 0.01, Fig. 4A ).