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Fig. 3
Cross section of a pectoral fin stained with HE. Wild-type embryos with well-developed myocytes and organized chondrocytes in pectoral fins at 37 (A), 48 (C), and 72 hpf (E). The hypoplastic pectoral fin of the tbx5a morphant showed reduced myocytes and disorganized chondrocytes at 37 (B), 48 (D) and 72 hpf (F). (af, apical fold; cc, chondrogenic condensation; dm, dorsal musculature; dmm, dorsal myogenic mesenchyme; ed. endoskeleton disc; vm, ventral musculature; vmm, ventral myogenic mesenchyme; pe, peritoneal epithelium; y, yolk, WT, Uninjected group, MO, tbx5 morphant group).
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