cloning vector for 23kb

[Mr. C.S.Wilding]

Does anyone know where I can get a vector to accept 23kb with PstI ends?
Thanks

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     * 	CRAIG WILDING,		       E-mail: OSP086 at BANGOR.AC.UK   *
     *	SCHOOL OF OCEAN SCIENCES,      Phone: (0)248 351151 ext.2899 *
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