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Figure 3

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ZDB-IMAGE-210814-6
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Figures for Tessadori et al., 2021
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Figure 3

Origin and final positioning of left- and right-originating cardiomyocytes during cardiac looping.

(A) At 28 hpf, as cardiac jogging towards the anterior left side of the embryo is completed, (A’) the tg(0.2Intr1spaw:GFP) labels cardiomyocytes localizing to the superior side of the cardiac tube (section). (B) By 48 hpf cardiac looping morphogenesis is accompanied by displacement in opposite directions of left-originating cardiomyocytes toward the outer curvatures of the ventricle and the atrium (arrowheads in the section and surface view panels). (C) At 48 hpf, the oug mutant heart tube fails to display any constriction at the AV canal and left-originating cardiomyocytes are not visible in the region around the outer curvatures of the cardiac chambers (asterisk; ventricle). Legends: R: Right; L: Left; S: Superior side; I: Inferior side. Scale bars: 50 µm.

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