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Pancreatic islet cytology of ictaluridae (Teleostei)

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Summary

The endocrine pancreas of the bullhead catfish, Ictalurus nebulosus, and the channel catfish, I. punctatas was studied by light and electron microscopy. In addition to the usual A, B and D cells, a fourth endocrine cell type was consistently observed in the electron microscope. All endocrine cell types were innervated. The vesicles of most of the nerve endings were ultrastructurally different from typical adrenergic and cholinergic vesicles, strongly suggesting the possibility of a third autonomic neurotransmitter serving as a regulator of catfish islet secretion.

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Authors and Affiliations

  1. Department of Anatomy, School of Medicine, East Carolina University, 27834, Greenville, North Carolina, USA

    Jack E. Brinn

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  1. Jack E. Brinn
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Supported in part by PHS grant AM 11407 awarded to Dr. Bryce Munger.

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Brinn, J.E. Pancreatic islet cytology of ictaluridae (Teleostei). Cell Tissue Res. 162, 357–365 (1975). https://doi.org/10.1007/BF00220182

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  • DOI: https://doi.org/10.1007/BF00220182

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