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. 2007 May 16;2(5):e450. doi: 10.1371/journal.pone.0000450

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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A, 4-week-old R26^floxneoWnt4; Col2a1-Cre mutant and control littermates. The mutant has a significantly shorter body and altered head shape relative to the control. B, Mean body weight comparisons±standard error between sex-matched mice from 12 to 72 days after birth. n = 5 for mutants, and n = 6 for controls.