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Spatiotemporal pattern of Raldh2 expression in lumbosacral (LS) spinal cord and dorsal root ganglia. Note that Raldh2 transcripts first appear in motoneurons around St. 22, where they are expressed throughout the entire lateral motor column (enclosed by dotted lines). Transcripts eventually become restricted to the medial lateral motor column in more caudal segments, and are not expressed in DRGs (d) at any stage or spinal level. Scale bars: 150 µm.
