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Bar graph showing the mean total matrix metalloproteinase (MMP) activity in Stevens-Johnson syndrome (SJS) (n = 7 eyes), ocular cicatricial pemphigoid (OCP) (n = 27 eyes) and healthy control (controls) (n = 37 eyes) tears using an MMP fluorimetric activity assay. All values were standardized to µg of protein loaded (RFU/min/µg protein). The P values are shown on the graph (* statistically significant, Kruskal-Wallis test). The error bars indicate the standard errors of the mean.
