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PCR genotyping of mouse genomic DNA from Elovl4+/+ and Elovl4+/270x mice. (A) A single 174-bp fragment appears in the case of wild-type mice, and a 201-bp fragment appears in the case of heterozygous mice along with the wild-type fragment. (B) A 280-bp neo cassette fragment appears in the case of mutant mice.
