Abstract
Some decades ago, Stone and associates reported that newt taste buds would develop in the absence of gustatory innervation[1]and could subsequently survive in the absence of any innervation[2]. More recently Northcutt and Barlow[3]examined axolotl taste-bud development and, with embryonic transplantation and dye injection, confirmed and extended these classic observations. Rather than migrating in from either the neural crest or placodes, axolotl taste-cell precursors originate in local epithelial tissue where their progeny can differentiate into taste buds even in the absence of innervation. Does the well-established nerve-independence of salamander taste buds also apply to mammalian taste buds, as Northcutt and Barlow now propose?
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