Fig. 1 | Nature Communications

Fig. 1

From: Tbx5a lineage tracing shows cardiomyocyte plasticity during zebrafish heart regeneration

Fig. 1

Expression profile of tbx5a-positive cardiomyocytes in embryonic zebrafish hearts. af Whole-mount immunofluorescence of tbx5a:GFP;myl7:mbmCherry double transgenic zebrafish hearts at 32 ac (n = 5/5) and 56 hours postfertilisation (hpf) df (n = 3/3). gl Confocal optical sections of tbx5a:GFP;myl7:mbmCherry hearts at 72 hpf gi (n = 5/5), 4 days postfertilisation (dpf) jl (n = 9/9), and 5 dpf (mo; n = 6/6). GFP (green) labels tbx5a+ cells and mCherry (red) marks cells expressing the pan-myocardial marker myosin light chain 7 (myl7). Shown are ventral views, cranial is to the top. At 32 hpf all cardiomyocytes are tbx5a:GFP+ but at 56, 72 hpf, 4, and 5 dpf tbx5a:GFP cardiomyocytes can be observed in the distal ventricle (arrowheads). The atrioventricular canal and large portions of the atrium are also GFP+. at, atrium; v, ventricle; Scale bars, 10 μm

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