Microvasculature of the principal islets in the scorpion fish, Myoxocephalus scorpius.

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Abstract
Since precise information with respect to the microvasculature of the teleost pancreas is lacking, analysis of the so-called principal islets (Brockmann bodies) was performed in Myoxocephalus scorpius with the use of methacrylate resin for the production of cast preparations. Stereoanalytical observations indicate that the circulatory pattern in the juxtasplenic pancreatic islets depends on nutritive and functional factors. Corkscrew-like arteries end in capillaries, and back flow is directed via sinuses into efferent vessels displaying nodular and valve-like structures.

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