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RNA dot blot hybridizations with bacterial strains listed in Table 1. The oligonucleotide probes were labeled with DIG, and hybridizations were performed as described in Materials and Methods at 42°C in a buffer containing 50% formamide. (a) Strain numbers, corresponding to the first 25 strains, respectively, in Table 1; (b) hybridization with probe EUB338; (c) hybridization with probe SEP-1.
