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Fig. 6. Misrouting of the mitral cell precursors in Pax6 mutants is not
caused by lack of olfactory nerve innervation. (A) Experimental procedures for
brain culture. After removal of the olfactory epithelium and head mesenchyme,
brain tubes were cultured in rotating bottles (whole brain culture, WBC) and
in TOC for 2 days. (B,C) Distribution of netrin G1-positive cells in the
wild-type (WT; B) and the mutant (-/-; C) telencephalon after WBC. In the
wild-type telencephalon, netrin G1-positive cells are located in the
rostral-most telencephalon (arrowhead in B), whereas in the mutant they are in
the lateral part of the telencephalon (arrowhead in C). Scale bar: 500
µm.