Abstract

Gene targeting by sequence-specific nucleases in one-cell embryos provides an expedited mutagenesis approach in rodents. This technology has been recently established to create knockout and knockin mutants through sequence deletion or sequence insertion. This article provides protocols for the preparation and microinjection of nuclease mRNA and targeting vector DNA into fertilized mouse eggs. Furthermore, we provide guidelines for genotyping the desired mouse mutants. Curr. Protoc. Mouse Biol. 2:347-364 © 2012 by John Wiley & Sons, Inc.

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