Two common fungi associated with farmer's lung: Fine structure of Aspergillus fumigatus and Aspergillus umbrosus |
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| Authors: | Kari E. Reijula |
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| Affiliation: | (1) Oulu Regional Institute of Occupational Health, Oulu;(2) Department of Medical Microbiology, University of Oulu, P.O. Box 451, SF-90101 Oulu, Finland |
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| Abstract: | The fine structure of Aspergillus fumigatus and Aspergillus umbrosus by transmission electron microscopy (TEM) is described. The fine structure of the ascosporic and asexual stages of A. umbrosus is described for the first time. Dense, homogenous material and fibers were detected on the outer hyphal cell wall of the Aspergilli. Septal pores were found in the hypha of A. umbrosus. Two wall layers were detected in the cell wall of the conidia of the both Aspergilli. The ascospores of A. umbrosus contained thick cell wall and the surface of which was smoother than that of the conidia. |
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| Keywords: | Aspergillus fumigatus A. umbrosus electron microscopy ultrastructure farmer's lung |
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