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. 2003 Dec 1;17(23):2870–2874. doi: 10.1101/gad.1117603

Figure 2.

Figure 2.

Transverse sections of the Xgal-stained 9.5-dpc (27 somite) BAC195Z, Shh-/- embryo that is shown in Figure 1D. β-galactosidase-positive cells are detected adjacent to the dorsal neural tube in early somites (So II). Stronger expression is seen in the subsequent, older somites (So IV-IX). β-galactosidase-positive cells are also seen in the ventral dermomyotome (So IV-IX). In older somites, strongly positive cells are seen, the nuclei of which are aligned in the center of the somites (central panel and So XIV-XXIV).