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Southern analysis of chromosomal DNA digested with EcoRV. Lanes 1 and 3, SA-RN4220; lanes 2 and 4, SA-K1606. The norA probe was used in lanes 1 and 2, and the pG+Host6 probe was used in lanes 3 and 4. The positions of molecular mass markers are indicated, with size in kDa given on the left.
