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IS6110 hybridization patterns of Rv7, Ra1, and five H37 polymorphic variants. As indicated, Rv10 and Rv11 (lanes 4 and 5) differ from Rv7 (lane 2) by the loss and addition of an IS6110 insertion, respectively (see arrows). Ra2 (lane 6) has lost an IS6110 insertion, while Ra3 and Ra4 (lanes 7 and 8) have gained an insertion compared to the reference strain Ra1 (lane 3 and 9).
