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. 2006 Jun 27;4(7):e243. doi: 10.1371/journal.pbio.0040243

graphic file with name pbio.0040243.g001.jpg

The specification of a pair of sensory neurons present in the Ciona intestinalis tail epidermis midlines is a two-step process controlled by the FGF, BMP, and Notch signaling pathways.