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Effect of cloricromene on PARS activity: Staining was absent in control tissue (A). 35 days following collagen-induced arthritis, PARS immunoreactivity was present in the paw from CII-immunized rats (B). In the paw of cloricromene-treated rats (C), no positive staining was found. Oral magnification: ×125. Figure is representative of at least three experiments performed on different experimental days.
