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Figure Caption
Fig. S1 Expression of fgf genes in ext2 mutants. Dorsal view of fgf4 (A-B), fg24 (C-D), fgf10 (E-F), fgf8 (G-H) expression in control embryos (left panels) and ext2 mutants (right panels) at 38 hpf. Note that comparable levels of all examined fgf genes are expressed at 38 hpf, with the exception of the developing pectoral fin. Black arrows label the presence (left panels) or absence (right panels) of developing pectoral fins.
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Full text @ BMC Dev. Biol.