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Figure 3 (A) Correlation between quantitative assessment of human leukocyte antigen (HLA)-DR and intercellular adhesion molecule (ICAM)-1 (r = 0.47, p < 0.001). (B) Quantitative expression of HLA-DR in relation to visual assessment (error bars represent 1 SEM). The y axis represents the percentage of endothelial expression. The x axis represents positive (Pos) grade 2+ (moderate intensity) or grade 3+ (high intensity) and negative (Neg) grade 0 (negative) or grade 1+ (weak intensity) by visual assessment. (C) Quantitative expression of ICAM-1 in relation to visual assessment.