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. 2015 Mar 14;6:6. doi: 10.1186/s13227-015-0001-y

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© Mason et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Meis2 is expressed independently of RA signalling in the interdigital tissue of the mouse. In the wildtype (WT) E14.5 mouse, Rarβ and Meis2 expression can be seen in the intra-digit junction (A) and tissue surrounding the digits (B) of the HL, respectively. RA signalling is absent in the mouse Rdh10 ^trex/trex mutant as evidenced by the lack of Rarβ expression in the retained interdigital webbing of the HL (C). Meis2 is still expressed in this region (D), indicating that its expression is not dependent on RA signalling. Dorsal views of autopods are shown. Scale bar represent 500 μm.