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(A) Colony blot of LPS mutant B1.5 probed with MAb 4D2 Mab (anti-H type 1). (B) Colony blot of nonirradiated strain NCTC 11637 probed with MAb NAM61-1A2 (anti-i). (C) Colony blot of nonirradiated strain NCTC 11637 probed with MAb 19-O-Le (anti-Lewis y). (D) Colony blot of nonirradiated strain NCTC 11637 probed with MAb 54.1F6A (anti-Lewis x). Variant 1c ( ) expresses both Lewis x and y; variant 1b ( ) expresses Lewis y but lacks Lewis x.
