FIGURE

Fig. 4

ID

ZDB-FIG-230202-25

Publication

Huysseune et al., 2021 - The conundrum of pharyngeal teeth origin: the role of germ layers, pouches, and gill slits

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Fig. 4

Oropharyngeal epithelium and teeth in actinopterygians. (A) Polypterus senegalus; pharyngeal epithelium and forming tooth germs (arrowheads) in an 18 mm larva. Scale bar = 20 ?m. (B) Acipenser ruthenus; tooth germ (arrowhead) in the buccopharyngeal epithelium in a 15 mm larva. Scale bar = 50 ?m. (C, D) Danio rerio, cross section of a 56 h post-fertilisation (hpf) embryo at the level of the first forming teeth (arrowheads), shown in a transgenic (sox17:egfp) line (C), and corresponding semithin, toluidine blue-stained section of a wildtype fish (D). Scale bars = 20 ?m. (E) Danio rerio, transmission electron microscopy (TEM) image of the bilayered pharyngeal epithelium (two arrows, delimited by dotted line) of a 72 hpf embryo at the level of the first two teeth (eo, enamel organ). Scale bar = 5 ?m. (F) Hemichromis bimaculatus, cross section of the oropharynx of a 1 day post-hatching (dph) (4.0 mm total length) specimen at the level of pouch 1 (P1). Scale bar = 20 ?m. (G) Oncorhynchus tshawytscha, sagittal section of the pharyngeal epithelium in an unhatched embryo 17 days post-fertilisation (dpf), at the level of the (open) pouch 2 (P2). Scale bar = 20 ?m.

Expression Data

Expression Detail

Antibody Labeling

Phenotype Data

Phenotype Detail

Acknowledgments

This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image. Full text @ Biol. Rev. Camb. Philos. Soc.