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Fig. 6 | BMC Evolutionary Biology

Fig. 6

From: Reiterative use of FGF signaling in mesoderm development during embryogenesis and metamorphosis in the hemichordate Ptychodera flava

Fig. 6

FGF signaling regulates the expression of the mesodermal and myogenic genes. Expression patterns of foxc (A1-B4), foxf (C1-D4), myocardin (E1-F4), stMHC (G1-H4) and fgfa (I1-J4) were analyzed in 43 hpf or 73 hpf embryos treated with DMSO or 2.5 μM PD173074 at various developmental stages (indicated by the yellow circles on the left). Embryos were observed from the lateral side with the mouth to the left. All panels are shown in the same scale, according to the scale bar (100 μm) in A1. Green arrows in A3, B3, F3 and H3 mark expression of the indicated gene at the ventral tip of the mesoderm/pharyngeal muscle. Blue arrow in J4 indicates the expression of fgfa in the hydroporic canal

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