In an oviparous teleost, Brachydanio rerio, the Rohon-Beard cells begin to differentiate early in the dorso-lateral region of the spinal cord (st. 19), then they reach the dorso-medial position (st. 20-23). The Rohon-Beard cells are completely differentiated at the hatching time (st. 25) when they attain the highest number. Six days later the Rohon-Beard cells begin to rarefy and then disappear. The involutive features of these neurons are described.
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Con il contributo del Ministero per i Beni e le Attività Culturali