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Fig. 1
Expression of cardiomyocyte and endothelial marker genes (cmlc2, fli1) at three different stages of zebrafish embryo development (18, 24, 42 hpf). a-c Expression of cmlc2 at 18hpf (a), 24hpf (b), and 42hpf (c). A pair of primordia were generated at 18 hpf, one on each side of the midline (a), The primordia on both sides fused to form a single linear heart tube at 24 hpf (b), the heart tube undergoes a loop and the heart chamber was visible (c). V, ventricle; A, atrial. d-f Expression of fli1 at 18 hpf (d), 24 hpf (e). and 42hpf (f)
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