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Figure 3 Effect of 4‐day dexamethasone treatment on colonic protease‐activated receptor (PAR‐2) expression. PAR‐2 immunoreactivity (brown) in colonic sections of (a) vehicle‐treated control animals and (b) dexamethasone‐treated rats (A); quantification of PAR‐2 immunoreactivity in colonic mucosa (B). Data are expressed as optical density, as the total number of grey levels per square micrometre of colonic mucosa.
