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Restriction map of the recombinant plasmids pCYT2BC1 and pCYT2BC2 containing the cyt2Bc gene. The position and direction of transcription of the identified genes are indicated. The vectors pBluescript SK(+) and pHT315 are represented by hatched and solid bars, respectively. The asterisks indicate that sites have been lost. Abbreviations: E, EcoRI; H, HindIII; N, NsiI.
