Association of urinary exosomal biomarkers with Banff scores in kidney allografts. (A) Correlation between the Banff lesion score (g) with LBP and CST3. (B) The statistical significance of microcirculatory inflammation (g + ptc score) was determined using two-tailed Mann–Whitney U test. *** p < 0.001. (C) Correlation between the Banff lesion score (g + ptc) with LBP and CST3. The results were categorized as strong (r = 0.7–1) and moderate (r = 0.5–0.7) according to the degree of association. Statistical significance was determined using two-tailed Mann–Whitney U test. *** p < 0.001. ABMR, antibody−mediated rejection; NOMOA, no major abnormality; TCMR, T cell−mediated rejection; CST3, Cystatin C; LBP, lipopolysaccharide−binding protein; g, glomeruli; ptc, peritubular capillaries.