The Fine Structure of the Microvilli of Isolated Brush Borders of Intestinal Epithelial Cells

Boyd, C. A. R.; Parsons, D. S.

doi:10.1083/jcb.41.2.646

Cited by 18 publications

(1 citation statement)

References 12 publications

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“…The microprojections also greatly increase the actual surface of the epithelium, which, according to Harding et al (1974), should augment the process of diffusion and active transport and also enhance the total activity of enzymes associated with this region of the plasma membrane (Boyd S- Parsons 1969).…”

Section: High-power Electron Micrograph Showing Filamentous Structurementioning

confidence: 96%

The Ultrastructure of the Normal Conjunctival Epithelium of the Guinea Pig

Latkovic

Nilsson

1979

Acta Ophthalmologica

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The ultrastructure of the superficial cell layer of the perilimbal zone of the guinea pig conjunctival epithelium as seen in transmission and scanning electron micrographs is described. The major interest is focused on the apparatus of vesicles, vacuoles and cysts and their possible significance in connexion with transport functions and autophagocytic processes. The importance of the cell surface components and the role of the microfilaments in phagocytosis are also discussed.

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Section: High-power Electron Micrograph Showing Filamentous Structurementioning

confidence: 96%

The Ultrastructure of the Normal Conjunctival Epithelium of the Guinea Pig

Latkovic

Nilsson

1979

Acta Ophthalmologica

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Fine structure of the midgut epithelium in the developing brown shrimp, Penaeus aztecus

Talbot

Clark

Lawrence

1972

Journal of Morphology

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The midgut epithelium of larval and early postlarval brown shrimp has been studied with light and electron microscopy. Ultrastructurally the features of the midgut do not change during these stages of development. On the basis of electron density, two epithelial cell types can be distinguished, and these are referred to as light and dark cells. The dark cells contain more rough endoplasmic reticulum and more free ribosomes than the light cells. Mitochondria in the dark cells have a matrix which is less electron dense than the mitochondrial matrix of the light cells. Both cell types have a microvillous border with a surface coat. The microvilli lack microfilaments within their core, and a terminal web is not differentiated in the stages examined. Tubular smooth endoplasmic reticulum is abundant in the basal portions of the cells. Electron dense, membrane bound vesicles are consistently seen in association with the Golgi apparatus, apical cell surface, and gut lumen and therefore are believed to be secretory granules. Cells in the anterior portion of the midgut often contain very large lipid droplets in the cytoplasm.

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