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    The widespread availability of recombineered vectors and gene targeted embryonic stem cells from large-scale repositories facilitates the generation of mouse models for functional genetic studies. Southern blotting validates the structure of these targeted alleles produced by homologous recombination, as well as indicating any additional integrations of the vector into the genome. Traditionally this technique employs radioactively-labelled probes; however, there are many laboratories that are restricted in their use of radioactivity. Here, we present a widely applicable protocol for Southern blot analysis using cold probes and alternative procedures employing radioactive probes. Furthermore, the probes are designed to recognise standardised regions of gene-targeting cassettes and so represent universally applicable reagents for assessing allelic integrity. Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.


    Gemma F Codner, Valerie Erbs, Jorik Loeffler, Lauren Chessum, Adam Caulder, Nicolas Jullien, Sara Wells, Marie-Christine Birling, Lydia Teboul. Universal Southern blot protocol with cold or radioactive probes for the validation of alleles obtained by homologous recombination. Methods (San Diego, Calif.). 2021 Jul;191:59-67

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    PMID: 32599056

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