Changes in the ultrastructure of Nematospiroides dubius (Nematoda) intestinal cells during development from fourth stage to adult |
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| Authors: | Dr T P Bonner F J Etges M G Menefee |
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| Institution: | (1) Department of Biology, University of Notre Dame, Notre Dame, Indiana;(2) Departments of Biological Sciences and Pathology, University of Cincinnati, Cincinnati, Ohio, USA;(3) Department of Biological Sciences, State University of New York, College at Brockport, 14420 Brockport, New York, USA |
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| Abstract: | Summary The general fine structure of intestinal cells and changes which occur in ultrastructure during development from fourth-stage to adult N. dubius are reported. In fourth-stage worms pigment granules are prominent in intestinal cells. In adults the number of pigment granules appears to be reduced and phagolysosomes containing membranous profiles and pigment material increase in number. Another reorganization of cell structure involves mitochondria which are randomly distributed in the cytoplasm of cells in fourth-stage worms, concentrated in the apical cytoplasm in worms in the molting process, and confined to the base of cells in adult worms. Other changes involved structure of the nucleus, rough endoplasmic reticulum and glycogen content of cells.This investigation was supported, in part, by NIH Fellowships I-FI-GM-32750 and 5-F02-AI-32750. |
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| Keywords: | Intestinal cells Cytodifferentiation Phagolysosomes Pigment granules Nematode Nematospiroides dubius |
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