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Correlations for the percent area of expression for each inflammatory factor and the amount of wear debris in each tissue section (n = 30) revealed the amount of UHMWPE wear debris correlated with (A) TNFα and IL-1β, (B) VEGF, and (C) NGF, and substance P (SP). There was no correlation with PDGFbb. Data are presented as median ± SD. The circles and stars represent the outliers and extremes, respectively.
