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(a) Restriction map of pAC200. Cloned regions are indicated as following: 23-kb BamHI fragment, solid line; 7.2-kb SmaI fragment, stippled line; 6.2-kb SalI fragment, striped line. (b) Scheme of a DNA region containing the cehA gene and its carbaryl-degrading activities. Abbreviations: B, BamHI; E, EcoRI; EV, EcoRV; Sa, SalI; Sc, SacII; Sm, SmaI.
