Electron microscopy of the intestine of the african lungfish, Protopterus aethiopicus

@article{Purkerson1975ElectronMO,
  title={Electron microscopy of the intestine of the african lungfish, Protopterus aethiopicus},
  author={Mabel L. Purkerson and Jennifer U. M. Jarvis and Sarah A. Luse and Edward W. Dempsey},
  journal={The Anatomical Record},
  year={1975},
  volume={182}
}
Electron microscopic observations are reported on the intestine of the African lungfish, Protopterus aethiopicus. The lungfish has a spiral valve rather than a true stomach. Segments of mucosa from this area reveal, by transmission microscopy, that most cells have distinct striated borders with parallel microvilli. Fibrils within the core of the microvilli extend deeply into the cytoplasm. Microvilli on the surface of goblet cells are less regularly arranged than those of absorptive cells… 
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The gut of the juvenile African lungfish Protopterus annectens: A light and scanning electron microscope study
TLDR
The microstructure of the alimentary canal of the juvenile lungfish Protopterus annectens is described, suggesting that most of the digestive processes take place in the anterior part of the spiral valve.
The Anatomy of the Gastrointestinal Tract of the African Lungfish, Protopterus annectens
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It is hypothesized that the absence of function is accompanied by structural modifications of the epithelium, and the anatomy of the lungfish gut is more similar among all the three lungfish genera than previously thought.
Light and Scanning Electron Microscope Examination of the Digestive Tract in Peppered Moray Eel, Gymnothorax pictus (Elopomorpha)
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The morphology of the digestive tract of the peppered moray eel was examined using both light and scanning electron microscopy and it was suggested that the terminal region of the stomach is specialized for storage of large food items and it is possible that the partition‐like mucosal folds within the intestine perform a function similar to that of the spiral valve.
The spleen of the African lungfish Protopterus annectens: freshwater and aestivation
TLDR
Lungfish spleen shares structural characteristics with secondary lymphoid organs of both ectothermic and endothermic vertebrates, but appears to have evolved in unique ways.
The Alimentary Canal of the African Lungfish Protopterus annectens During Aestivation and After Arousal
TLDR
The structural modifications that occur in the alimentary canal of the African lungfish Protopterus annectens during aestivation and after arousal are described and the presence of intraepithelial mast cells suggests that inflammation is part of the cellular response to aestivation.
Ciliated Cells in the Human Gastric Mucosa Evidence of Metaplastic Change
TLDR
Ciliated cells in the gastric mucosa have been found mainly in elderly Japanese patients, but were also observed exceptionally in one Chinese, two Swedes and one American, and therefore a new term, “ciliated metaplasia”, is proposed for their occurrence.
An electron microscopic study of the ciliated cells in the human gastric mucosa.
  • T. Okuda, T. Ogata
  • Medicine
    Archivum histologicum Japonicum = Nihon soshikigaku kiroku
  • 1976
TLDR
Ciliated cells were found in the mucosa of the human stomach in three patients, suggesting that they occur only in pathologically altered mucosa.
1 – Morphological diversity of the gastrointestinal tract in fishes
The occurrence of ciliated and mucous cells in the peripapillary trench of the rat tongue
TLDR
Ciliated cells surrounded by mucous cells were found near the base of the peripapillary trench of the rat circumvallate papilla and each cilium showed the nine plus two filament pattern characteristic of motile cilia.
MORPHOLOGICAL AND PARASITOLOGICAL VARIATIONS OF AFRICAN LUNGFISH, PROTOPTERUS ANNECTENS IN DRY AND RAINY SEASONS
This study was carried out to determine the seasonal morphological and parasitological variations of African Lung fish (Protopterus annectens) from Upper River Benue, Nigeria. Twenty specimens each…
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