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AHL cleavage in B. thailandensis affects swarming and twitching motility in addition to the beta-hemolysis of sheep erythrocytes. Row 1, swarming motility; row 2, twitching motility; row 3, beta-hemolytic activity. DW503 represents wild-type B. thailandensis. Strain genotypes are listed above each image and are described in Table 1. The B. thailandensis luxI genes are listed as btaI, while the luxR alleles are listed as btaR.
