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Fig. 2. Motor neuron inducing activity of MNR2 in chick spinal cord. (A) Widespread unilateral expression of MNR2 in stage 24 chick spinal cord, obtained by unilateral (right side) in ovo electroporation at stages 10-12. (B-F) Ectopic dorsal expression, after MNR2 electroporation, of Lim3 (B), Isl1 (C), Isl2 (D), HB9 (E) and SC1 (F). Images are representative of more than 40 electroporated embryos.