Fine structure of taste buds in the tongue, palatal mucosa and gill arch of the axolotl, Ambystoma mexicanum.

The fine structure of taste buds in the tongue, palatal mucosa and gill arch of the axolotl, Ambystoma mexicanum, was examined by means of electron microscopy. The taste buds consisted of three types of cells: light, dark and basal cells. The light cell was characterized by the presence of microtubules in the supranuclear cytoplasm and two kinds of vesicles, dense-cored and synaptic vesicles, in the basal cytoplasm. This cell type had afferent synaptic contacts with nerve fibers. The supranuclear cytoplasm of the dark cell was filled with secretory

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