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Genetic relationships between the 71 ETs of the B. cereus and B. thuringiensis strains isolated. Clustering of the ETs was determined with a matrix of coefficients of genetic distances by the UPGMA method by using PHYLIP V 3.5c (9). ETs are numbered as described in Table 2. Symbols indicate the isolates from the two Bacillus taxa at the two sampling sites: •, populations BcF1 to BcF5; ○, populations BcS1 to BcS5; ▪, populations BtF1 to BtF5; □, populations BtS1 to BtS5.
