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REP-PCR. Lanes A and P, molecular size markers; lanes B and C, S. flexneri strains belonging to group F-II; lanes D, E, and F, S. flexneri strains belonging to group F-I; lanes G and H, S. flexneri strains belonging to group F-III; lanes I and J, S. flexneri strains belonging to group F-IV; lanes K, L, and M, S. dysenteriae strains; lanes N and O, S. sonnei strains.
