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Fig. 2. Expression of Gdf11 in the neural tube results in rostral
displacement of motor neuron column and pool positions. (A)
Raldh2 and (B) Pea3 expression in the spinal cord and
(C,D) neurofilament (3A10) staining in HH stage 29 embryos 5 days after
Gdf11electroporation. The electroporated side (EXP) is on the right
of all panels, while the control side (CTL) is on the left. Rostral is towards
the top and caudal is towards the bottom. White brackets indicate the origins
of the spinal nerves that innervate the forelimbs in C and the hindlimbs in D.
Green asterisks mark the first (C) and the last (D) spinal nerves that
innervate the thoracic levels. Broken black lines mark the rostral boundaries
of the hindlimbs in D. Scale bars: 0.5 mm.