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. 2014 Dec 15;141(24):4806–4816. doi: 10.1242/dev.115535

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© 2014. Published by The Company of Biologists Ltd

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Fig. 2. — Pre-mRNA expression profile of Dll1 and Notch1 in the chick PSM. (A-E) In situ hybridisation of Dll1(i) and Notch1(i) in the PSM of HH8-HH13 embryos using intronic (i) RNA probes. Cyclical expression was confirmed by fix-and-culture analysis for Dll1(i) (B) and Notch1(i) (D). (E) Dll1(i) and Notch1(i) oscillate out of synchrony.