Fig. 4 Expression of sema3G in the pharyngeal arches, pectoral fin buds, and pronephric ducts. (A) Ventral view at 48 hpf of the developing pharyngeal arches showing that sema3G is expressed in the ventral part of each arch (arrowheads). (B and C) Sagittal sections at 48 hpf (B) and 60 hpf (C) showing the expression of sema3G in the arch mesenchyme. (D and E) Lateral views of the pectoral fin bud at 48 hpf (D) and 60 hpf (E) showing that sema3G is expressed in the mesenchyme of the developing pectoral fin bud, but is not detected in the apical ectodermal ridge (arrowhead in E). (F) Lateral view of trunk at 22 hpf showing sema3G expression in the developing pronephric ducts (arrowheads). Scale bars for A to E=50 μm. Scale bar in F=25 μm.
Reprinted from Gene expression patterns : GEP, 5(5), Stevens, C.B., and Halloran, M.C., Developmental expression of sema3G, a novel zebrafish semaphorin, 647-653, Copyright (2005) with permission from Elsevier. Full text @ Gene Expr. Patterns