Abstract
During microscopic examination of tissues of healthy-appearing perch caught in N.E. Minnesota lakes, it was noticed that the specimens frequently had variable numbers of epithelial cells whose nuclei contained eosinophilic inclusion bodies. These nuclear inclusions were found in a number of sites: surface epithelial cells of gill, skin and distal rectum; columnar cells of kidney collecting ducts; taste bud cells and, rarely, chloride cells of gill. In addition, the inclusions were found in rodlet cells in all of these regions, but not in rodlet or other epithelial cells of intestine. Under the electron microscope, these nuclear inclusions appear as 4-, 5-, and 6-sided paracrystals ranging in length from less than 0.5 μm to greater than 3 μm. The inclusions are usually surrounded by a narrow rim of electron-lucent nucleoplasm. Some crystals are composed of circular subunits hooked together (?) in parallel rows.
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Schedule a callMore From: Proceedings, annual meeting, Electron Microscopy Society of America
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