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Endogenous expression of Sox2 in the developing chicken inner ear. a, Whole mount expression of Sox2 in the NSD of the otic cup (arrowhead). b and c and d–f, are 12 μm adjacent sections of otocysts at embryonic day 3 showing overlapping expression of Sox2 (b, d), Lfng (e), Ngn1 (c), and Neurod1 (f) in the NSD. Only Neuord1 (f) is strongly expressed in the neuroblasts of the CVG. A, Anterior; D, dorsal; M, medial. Scale bars, 100 μm.
