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PA and US measurement of bowel wall tissues from normal and acute TNBS rats at 532 nm. (A) Representative photographs of ex vivo colon from normal and acute TNBS rats. The distal colon for imaging is denoted by black boxes. (B) US and PA images of the distal colons in (A). (C) Statistics of the average pixel intensity of 3 normal control versus 3 acute inflammatory samples. The upper and lower edges of the boxes are the 25th and 75th percentiles, respectively.
