Biochemical genetic evidence for a third species of Metridium (Coelenterata: Actiniaria) |
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Authors: | A. Bucklin D. Hedgecock |
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Affiliation: | (1) Immunogenetics Group, School of Medicine, University of California, 90024 Los Angeles, California, USA;(2) Dental Research Institute, University of California, 90024 Los Angeles, California, USA;(3) Present address: Department of Biology, Northwestern College, 51041 Orange City, Iowa, USA |
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Abstract: | Fine-structural analysis of the tissues of the marine demosponge Callyspongia diffusa was carried out using scanning electron microscopu and ethanol cryofracture. Micrographic data reveal the pathway of water movement through the sponge, and allow accurate measurement of the dimensions of successive structural filters in the aquiferous system. Understanding the organization and cytoarchitecture of the normal tissues of this sponge provides a basis for comparison where histopathology is being investigated, e.g. in allograft rejection reactions. |
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