Figure 6. Banff Lesion Score g (glomerulitis). Glomerulitis is a form of MVI and a feature of AMR activity. A, segmental glomerulitis; PAS, original magnification x400. B, Global glomerulitis. Note the characteristic complete or partial occlusion of capillary loops by leukocytes (short arrows) and endothelial cell swelling (long arrows). The score of g0 to g3 is determined by the percentage of glomeruli involved with either segmental or global glomerulitis. Complete or partial occlusion of a single capillary loop suffices to mark the respective glomerulus as involved by the glomerulitis. PAS, original magnification x400.