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Conservation of the human and mouse genomic VDR gene sequence. The Y-axis is the homology rate between human and mouse; the X-axis is the physical distance on the human VDR gene. All exons are indicated in purple, the 3′ UTR in light green, and the conserved noncoding region in red. The small black bars on the top of each frame indicate the polymorphisms we observed by resequencing, and the gray arrow on top indicates the transcription direction of VDR.
