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. 2016 Dec 9;3(4):34. doi: 10.3390/jcdd3040034

Figure 1.

Figure 1

Comparison of Pitx2 mRNA expression in mouse (a–c), chicken (d–f) and zebrafish embryos (g,g’). Mice and chicken, single in situ hybridization (ISH); zebrafish, double ISH: Pitx2, dark blue, and mlc2v, magenta. Note that in chickens and mice, Pitx2 delineates the left heart primordium and its remodeling. In developing zebrafish hearts, Pitx2 expression delineates the common atrium and is regionalized in the ventricles. vv: vitelline veins. Panels a–f are reproduced with permission from [85].