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Endocrine, stemness, proliferative, and proteolytic properties of alarm cells in ruby-red-fin shark (Rainbow Shark), Epalzeorhynchos frenatum (Teleostei: Cyprinidae)

Research Authors
Hanan H Abd-Elhafeez, Soha A Soliman, Abdelraheim H Attaai, Sara S Abdel-Hakeem, Abeera M El-Sayed, Alaa S Abou-Elhamd
Research Abstract

The current study investigated the morphological, histochemical, and immunohistochemical characteristics of alarm cells and their precursors in ruby-red-fin shark (rainbow shark), Epalzeorhynchos frenatum (Teleostei: Cyprinidae). Precursor alarm cells were shown to be small, cuboidal, pyramidal, or round in shape, with eosinophilic cytoplasm, resting on the basement membrane of the epidermis. The cells later elongated to become columnar in shape. Subsequently, they enlarged and became large oval-shaped cells. They then underwent shrinkage and vacuolation. The superficial alarm cells were collapsed. Alarm cells were found to have an affinity for different histochemical stains, including bromophenol blue, iron hematoxylin, Sudan black, Mallory triple trichrome, Crossman's trichrome, Safranin O, and Weigert's stains, as well as lipase and alkaline phosphatase. Endocrine properties of the alarm cells were …

Research Date
Research Journal
Microscopy and Microanalysis
Research Publisher
Cambridge University Press
Research Vol
27
Research Year
2021
Research Pages
1251-1264