Summary

The sites of insertion for two lysogenic bacteriophages have been mapped on the chromosome of Clostridium perfringes strain CPN50 using two techiniques based on pulsed field gel electrophoresis. Phage Φ29 was mapped to the 1 Mb region of the 3.6 Mb genome, near nanH wich encodes a potential virulence factor, while Φ59 was found to have inserted at 2.9 Mb.

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