Structure of the scales of Dermophis and Microcaecilia (Amphibia: Gymnophiona), and a comparison to dermal ossifications of other vertebrates

@article{Zylberberg1990StructureOT,
  title={Structure of the scales of Dermophis and Microcaecilia (Amphibia: Gymnophiona), and a comparison to dermal ossifications of other vertebrates},
  author={L. Zylberberg and M. Wake},
  journal={Journal of Morphology},
  year={1990},
  volume={206}
}
The structures of the dermal scales and the cells surrounding the scales in two species of gymnophione amphibians were studied using histochemistry and light, scanning and transmission electron microscopy. Scales are composed of a basal platt of several layers of unmineralized collagenous fibers topped with mineralized squamulae. Squamulae are composed of numerous mineralized globules and mineralized, thick collagen fibers. Mineralization is therefore both spheritic and inotropic. Isolated… Expand
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References

SHOWING 1-10 OF 82 REFERENCES
The histology and calcification of regenerating scales in the blackspotted topminnow, Fundulus olivaceus (Storer)
The regenerating scale and tissues comprising the scale pocket of Fundulus olivaceus were examined microscopically at specific intervals. Scale removal resulted in a thickening of the epidermis whichExpand
The structure of the osteoderms in the Gekko: Tarentola mauritanica.
TLDR
The two different mineralizing systems in the osteoderms of Tarentola mauritanica may reflect two different organic matrices, which are another expression of the potential retained by the reptilian dermis to form mineralized structures. Expand
Ultrastructural data on the scales of the dipnoan Protoptems annectens (Sarcopterygii, Osteichthyes)
TLDR
The scales of Protoptems annectens differ from the typical elasmoid scales of the teleosts by the peculiar structure of the squamulae, nevertheless they show enough structural characteristics to support the hypothesis that they can be considered as scales ofTheElasmoid grade, which have retained some plesiomorphic characteristics. Expand
Fine Structure of the Developing Scale in the Cichlid Hemichromis bimaculatus (Pisces, Teleostei, Perciformes)
The study of the formation and structure of the early teleost scale and its associated cells has been carried out on Hemichromis bimaculatus fry using in toto staining with alizarin and transmissionExpand
The fine structure of calcified Mandl's corpuscles in teleost fish scales.
Calcified Mandl's corpuscles present in the internal layer (or fibrillary plate) of the teleost fish scale were studied by transmission and scanning electron microscopy for a better understanding ofExpand
Fine structure of scale development in the teleost, Brachydanio rerio
TLDR
Mature and embryonic scales of the zebrafish, Brachydanio rerio, were examined by light and electron microscopy for mineralizing matrix and fibrillary plate content. Expand
Données nouvelles sur la structure et la minéralisation des écailles d'Anguilla anguilla (Osteichthyes, Anguillidae)
The structure of the scales in Anguilla anguilla was studied by light and electron microscopy and the mineral phase was analyzed by histophysical techniques. Although the scales of the eel are smallExpand
Endothelial layers in fish skin
TLDR
Layers of cells limiting the deep face of the dermis and lining the scale pockets can be described as endothelial, using the term in the broad sense to compare with the vascular and lymphatic endothelia, the scale-forming cells, the perineurium and the peritoneal lining. Expand
Structure of the dermal scales in gymnophiona (Amphibia)
Histology and cytology of dermal scales of the gymnophionans Ichthyophis kohtaoensis and Hypogeophis rostratus reveal their structure and the nature of their mineralization.
Spatial Organization and Mineralization of the Basal Plate of Elasmoid Scales in Osteichthyans
TLDR
The various characteristic organizations of the skeletal tissues or isopedine that constitute the basal plate of osteichthyan elasmoid scales, all are varieties of bone tissue that have undergone more or less important specialization linked to the general regression of dermal ossifications and to functional adaptations. Expand
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