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Distribution patterns of V3 INs in the mouse spinal cord. A–D, The 30 μm transverse sections from lumbar segments of spinal cords from Sim1Cre/+; Rosafloxstop26TdTommice, at E10.5 (A), E14.5 (B), P0 (C), and P21 (D). Scale bar, 100 μm. The dashed lines and numbers indicate the Rexed's laminae. E, The 30 μm half-transverse sections from a P0 spinal cord at thoracic (i), upper lumbar (ii), lower lumbar (iii), and sacral (iv) regions.
