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. 2020 Aug 18;36(9):1023–1034. doi: 10.1007/s12264-020-00554-y

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — The expression of markers of cerebellar granule cell progenitors is impaired in arl13b-deficient embryos. A–I’ Representative images of in situ hybridization illustrate that the three paralogues of atoh1 (atoh1a, 1b and 1c) are expressed in distinct populations of cerebellar granule cell progenitors. atoh1a is expressed in the URL and LRL. Similar expression patterns of atoh1a occur in wild-type embryos (A) and arl13b mutants (B) while its expression is absent from the oral dorsomedial URL (dashed box) in arl13b morphants (C) at 36 hpf and 48 hpf (A’–C’). The expression patterns of atoh1b remained unaffected in arl13b mutants and morphants (D–F’). The expression level of atoh1c was decreased in the URL in arl13b morphants (I and I’) (cb, cerebellum; URL, upper rhombic lip; LRL, lower rhombic lip). A–I’, Scale bar 100 μm.