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. 2019 Feb 25;10:134. doi: 10.3389/fphys.2019.00134

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Copyright © 2019 Ott, Kaufmann, Granzow, Hinderhofer, Bartram, Theiß, Seitz, Paramasivam, Schulz, Moog, Blum and Evers.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Embryonic pibf1 expression correlates with ciliated tissues. Embryos of defined stages were analyzed for pibf1 mRNA by whole-mount in situ hybridization using a digoxigenin-labeled antisense probe. (A) Maternal transcripts in the animal hemisphere of the 4-cell embryo. (B) Expression in the involuting marginal zone tissue of the early gastrula embryo. (C) Staining of pibf1 in the axial and paraxial mesoderm at early neurula stages. (D) Pibf1 signals in skin MCCs and axial/paraxial mesoderm. (E) Expression in the otic vesicle at stage 25. (F–H) Expression pattern in tadpoles, including the head region, somites, and nephrostomes. Histological section of the eye (H′) revealed signals in the retina as well as the inner nuclear cell layer. Planes of histological sections in (B′,D′,E′,F′,H′) are indicated in the respective panels. an, animal; a, anterior; d, dorsal; DL, dorsal lip; INL, inner nuclear layer; l, left; neph, nephrostomes; no, notochord; nt, neural tube; ov, otic vesicle; p, posterior; r, right; re, retina; som, somite; v, ventral; veg, vegetal.