Fig. 1. Representative two-dimensional electrophoresis of plasma obtained before (baseline) and at 6 and 36 h after abdominal aortic aneurysm surgery (AAA) (  panels A, B, C ) or abdominal surgery (AS) (  panels D, E, F ) using a pH range of 3 to 10. Spots marked by their numbers show the location of the proteins that were altered in their expression (  table 3 ). bas. = baseline; Mr = relative mass; nonlinear IPG = nonlinear immobilized pH gradient.