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Enhanced mucosal IgA secretion determined by immunofluorescence staining. (A, C) Immunofluorescence staining and quantitative analysis of IgA (green) in ileal tissue sections. (B, D) Immunofluorescence staining and quantitative analysis of IgA (green) in jejunal tissue sections. Cell nuclei are counterstained with DAPI (blue). MFI means fluorescence intensity. Data are presented as mean ± SD; * P < 0.05 vs. PBS control group and NC8 control group.
