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Originally published as Genetics Published Articles Ahead of Print on June 29, 2009.

Genetics, Vol. 183, 399-402, September 2009, Copyright © 2009
doi:10.1534/genetics.109.105213

Recombinase-Mediated Cassette Exchange Provides a Versatile Platform for Gene Targeting: Knockout of miR-31b

* Temasek Life Sciences Laboratory and {dagger} Department of Biological Sciences, National University of Singapore, 117604, Republic of Singapore

3 Corresponding author: Temasek Life Sciences Laboratory, National University of Singapore, 1 Research Link, Singapore, 117604, Republic of Singapore.
E-mail: cohen{at}tll.org.sg

A series of vectors has been designed to enhance the versatility of targeted homologous recombination. Recombinase-mediated cassette exchange permits sequential targeting at any locus and improves flexibility in making user-defined mutations. Application of RMCE to delete an intronic microRNA gene is described.