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Fig. S5
SHF progenitor cells are present after inhibition of FGF signaling. (A-B) MF20 immunofluorescence and mef2cb in situ hybridization (green) in lateral views at 30 hpf, after heat shock at 18 hpf. mef2cb (green, arrowheads) is expressed in SHF progenitor cells residing next to the differentiated myocardium (red) in both nontransgenic (A, n=8) and Tg(hsp70:dnfgfr1) (B, n=8) embryos. Scale bar: 50 μm.
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