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Effects of PBI on claudin-2 expression in the jejunum. (A) Representative photomicrograph of claudin-2 expression (red) in the cross-sections of the jejunum at day 4 and day 7 post-irradiation. (B) Quantitation of claudin-2 expression levels in jejunal crypts at time points indicated post-12 Gy PBI. The data are presented as average ± SEM; N = 3 (day 4) and N = 5 (day 7).
