TEM of Epithelial Cilia and Microvilli

TEM of Epithelial Cilia and Microvilli

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Credit: Don W. Fawcett/SCIENCE PHOTO LIBRARY

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Caption: Colour enhanced transmission electron micrograph of epithelial cilia and microvilli from rat trachea, fixed in aldehyde and osmium tetroxide and exposed to low molecular weight galloyl-glucoses (tannic acid). The ciliated cells of mammals often have microvilli interspersed among the cilia. These transverse sections near the cell surface permit a comparison of the size and internal structure of the two types of cell process. Both are limited by a trilaminar unit membrane and have a cytoplasmic matrix of similar density. The nonmotile microvilli have no resolvable internal structure, whereas the motile cilia have a consistent pattern of nine doublet microtubules uniformly spaced around a central pair of singlet microtubules.

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Keywords: cardiovascular system, cell, chemical fixation, cilia, colorized, enhanced, epithelial, epithelium, histology, micrograph, micrography, microscopy, microvilli, rat cell, rat tem, respiratory system, tem, trachea, transmission electron micrograph, transmission electron microscopy

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