Morphology of the Dorsal Lingual Papillae in the Newborn Panther and Asian Black Bear

概要

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The dorsal lingual surfaces of a newborn panther (<I>Panthera pardus</I>) and two newborn asian black bears (<I>Selenarctos thibetanus</I>) were examined by scanning electron microscopy (SEM ). The tongues of the panther and asian black bear were about 40 mm in length and about 20 mm in width. Filiform, fungiform and vallate papillae were found. The filiform papillae were distributed over the entire dorsal surface of the tongue. In the panther, the filiform papillae on margin of the lingual apex were divided into two shapes which were horny or club-shaped papillae. The filiform papillae on the midportion were larger than those on the lateral region in size. The fungiform papillae also were divided into two shapes which were hemispherical or club-shaped papillae. In the asian black bear, the filiform papillae on the margin of the lingual apex were larger than those on margin of the panther tongue. The vallate papillae in the animals of two species were located on both sides of the posterior end of the lingual body. Each papilla was surrounded by a groove and crescent pad.
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