Apical end organ structure and histochemistry in plerocercoids of Proteocephalus ambloplitis |
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Authors: | James R. Coggins |
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Affiliation: | Department of Zoology and Center for Great Lakes Studies, University of Wisconsin-Milwaukee, Milwaukee, WI, U.S.A. |
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Abstract: | The end organ of Proteocephalus ambloplitis pleroceroids was studied by light microscopy and histochemistry. The end organ consists of a spherical sac filled with an amorphous, granular secretory product. The lining of the end organ is devoid of an epithelial cell layer. Protease was detected within the end organ by a gelatin-silver film technique. No aminopeptidase activity was detected. The end organ was PAS positive and diastase-fast. A positive test was obtained for neutral mucopolysaccharides and protein. The end organ is thought to assist migration of larvae through host tissue. |
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Keywords: | plerocercoid metacestode end organ histology histochemistry |
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