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. 2006 Jul 25;4(8):e254. doi: 10.1371/journal.pbio.0040254

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Copyright: © 2006 Bellingham et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Comparison of syntenic regions encompassing the OPN4 locus on human chromosome 10 with that of the Opn4m locus on chicken Chromosome 4. Gene order has been conserved.

(B) Comparison of representative loci between the PTGD2 and SEC24B genes on human Chromosome 4q22.3-q25 (approximately 1 Mb apart) and the orthologous loci on chicken Chromosome 4. Note the intrachromosomal rearrangements and lack of an OPN4X locus in humans.