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Analysis of Tg[Isl1:GFP] non-exposed embryos (A-C) and ethanol-exposed (D-F). (G) Quantification of GFP-positive motoneurons in specific hemisegments and (H) measurement of axonal lenght. Note that there is not an overall change in the pattern of motoneurons or number of them in treated embryos, although axonal length is diminished.
