Antigens of SG002, field isolated Salmonella Gallinarum in Korea, were tested against antiserum of SG002 and SR2-N6 (rough mutant of SG002) using 2DE western blotting. Different blots obtained were analyzed using LC-MS/MS. Outer membrane protein extracts of SR2-N6 were also tested against the antiserum of SR2-N6 using 2DE western blotting. Spots were analyzed with LC-MS/MS.