Site-specific excision of integrated polyoma DNA.

Abstract

Cyp cells are permissive murine cells carrying a thermosensitive polyoma virus genome that remains integrated at 39 degrees C, but is effectively excised and replicated after transfer to 33 degrees C. In rare subclones of the Cyp line, temperature shift-down yields predominantly homogeneous populations of chimeric molecules that appear to reflect the… (More)

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