On the Presence of a Ciliated Columnar Epithelial Cell Type within the Bovine Cervical Mucosa

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Abstract
Cervical tissue samples were obtained at slaughter from the mid-cervix of three heifers at 4 days postestrus and from the anterior, middle and posterior cervix of two cows at 14 days postestrus. Tissues were processed for carbohydrate histochemistry and electron microscopy. Both ciliated and non-ciliated columnar epithelial cells were present in all tissues examined. At 4 days postestrus the non-ciliated cells contained a large amount of stored mucin in the supranuclear region; nuclei were located in the extreme basal region of the cell. Sulfated and carboxylic acidic muco-substances were present in both the stored mucin and mucin secreted into the cervical lumen. At 14 days postestrus less mucin was observed in the non-ciliated cells. The ciliated epithelial cells from animals 4 days postestrus exhibited a more intense eosinophilia than the non-ciliated cells and were constricted between two adjacent non-ciliated cells. This constriction was less prominent at 14 days postestrus. The nucleus of the ciliated cell was more centrally located than in the non-ciliated cell. Numerous cilia containing the 9+2 filament arrangement were observed. Copyright © 1973. American Society of Animal Science. Copyright 1973 by American Society of Animal Science.

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