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Alcian blue-silver stained SDS-polyacrylamide gels (A) of crude (lanes 1) and purified (lanes 2 and 3) polysaccharide preparations of X. hyacinthi S148 and corresponding immunoblots, developed after incubation with MAb 2E5 (B) and polyclonal rabbit anti-Xanthomonas antiserum (C). REG. I, region I.
