A new type of cell in the pulmonary epithelium of the newt Triturus alpestris Laur |
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Authors: | Dr Lucyna Goniakowska-Witalińska |
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Institution: | (1) Department of Comparative Anatomy, Jagiellonian University, Kraków, Poland |
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Abstract: | Summary Single cells of a new type appear scattered among pneumocytes in the pulmonary epithelium. The surfaces of these cells communicate with the air space and display numerous finger-like microvilli. In comparison to pneumocytes, these cells have a more lucid cytoplasm and their apical parts contain large amounts of electron-lucent vesicles and electron-dense granules, which are probably released into the lumen of the lung. These secretory cells exhibit a yellow formaldehyde-induced fluorescence, which suggests that they belong to the class of APUD cells. |
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Keywords: | Lung Amphibia Secretory cells |
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