Generation of Zip4BKO mice.

<p>A. Schematic of the targeting construct of Zip4 showing the region of the Zip4 gene flanked by the loxP sites. The cre recombinase induced recombination at these loxP sites which results in the excision of the portion of the Zip4 gene that contains 7 exons. B. PCR results obtained from ear skin samples.