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Fig. 4 FGF-receptor signalling controls astroglial development. (A-H) Embryos were analysed for fabp7a (A-F) and glula (G,H) RNA expression at 36 hpf and 55 hpf, respectively. Wild-type embryos were either treated with DMSO (A,E,G) or treated with SU5402 at 20 hpf (B) or at 30 hpf (F,H) and wild-type (C) and Tg(hsp70l:dnfgfr1-gfp) (D) embryos were heat shocked at 20 hpf. Embryos were double labelled for ephA4 (red: A-D,G,H) RNA to mark r3 and r5. Arrowheads indicate the centre of r4 (E,F). All embryos are shown in dorsal view with anterior to the left. Scale bar: 50 μm.
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