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Genetic mapping of the mgr locus. The insertion sites of Tn917 (in CYL175) and cat (in CYL402 and CYL412) are indicated by triangles. The rates of cotransduction are indicated as percentages. B, BamHI; Bg, BglII; E, EcoRI; N, NcoI; S, SalI; Ss, SstI; X, XbaI.
