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Fig. 2
Genetically labelled CMs are found in all three myocardium layers. Adult zebrafish hearts labelled at 2 dpf were sectioned and processed for immunofluorescence with antibodies against MF20 and GFP. GFP-labelled CMs were identified in (a,a′) the primordial layer, (b,b′) the trabecular layer and (c,c′) the cortical layer. Nuclei were counterstained with DAPI. Scale bars: (a–c) 100 µm, (a′–c′) 25 µm. Dashed lines in (a–c) define the magnification areas shown in (a′–c′), respectively.
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