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. 2022 Jun 21;13(7):1107. doi: 10.3390/genes13071107

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Calcein staining illustrating the impact of foxl1 loss on craniofacial development and calcification. (A) Embryos of WT aged 6 and 10 dpf (n = 173 and 99, respectively) as well as those of foxl1^-/- (n = 116 and 65, respectively). WT embryos at both 6 and 10 dpf exhibit normal craniofacial development and calcification of all jaw structures. foxl1^-/- embryos show a delayed calcification in the ceratohyal and hyomandibula (red boxes) at 6 dpf yet appear mostly recovered by 10 dpf. (B) The proportion of embryos with delayed calcification in foxl1 mutants is statistically significant (Fisher’s *** p = 0.0001) when compared to wildtype siblings. PQ, palatoquadrate; M, Meckel; HY, hyomandibula (hyosympletic); BH, basihyal; OP, opercula; CH, ceratohyal. Scale bars are 100 µm.