Ultrastructural and Cytochemical Identification of Peroxisomes in the Ciliate Ichthyophthirius multifiliis

ALEXANDRE LOBO-DA-CUNHA,

Corresponding Author

ALEXANDRE LOBO-DA-CUNHA

Department of Cell Biology, Institute of Biomedical Sciences, University of Oporto, 4000 Porto, Portugal

To whom correspondence should be addressed.Search for more papers by this author

CARLOS AZEVEDO,

Corresponding Author

CARLOS AZEVEDO

Department of Cell Biology, Institute of Biomedical Sciences, University of Oporto, 4000 Porto, Portugal

To whom correspondence should be addressed.Search for more papers by this author

ALEXANDRE LOBO-DA-CUNHA,

Corresponding Author

ALEXANDRE LOBO-DA-CUNHA

Department of Cell Biology, Institute of Biomedical Sciences, University of Oporto, 4000 Porto, Portugal

To whom correspondence should be addressed.Search for more papers by this author

CARLOS AZEVEDO,

Corresponding Author

CARLOS AZEVEDO

Department of Cell Biology, Institute of Biomedical Sciences, University of Oporto, 4000 Porto, Portugal

To whom correspondence should be addressed.Search for more papers by this author

First published: March 1993

https://doi.org/10.1111/j.1550-7408.1993.tb04899.x

Citations: 3

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Abstract

ABSTRACT. The peroxisomes of the parasitic ciliate Ichthyophthirius multifiliis were studied, using ultrastructural and cytochemical techniques. In this ciliate most peroxisomes possess a circular or oval section less than 0.6 μm in diameter. However, some dumbbell-shaped and elongated peroxisomes could also be observed. These organelles were frequently associated with the mitochondria and were more abundant in the cell cortex than in the center of the ciliate. Small vesicles and dense nucleoids were usually present in the ultrathin sections of these peroxisomes. Peroxisomal vesicles and tubular structures were selectively impregnated with osmium tetroxide. Catalase was detected by cytochemical techniques in I. multifiliis peroxisomes.

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Volume40, Issue2

March 1993

Pages 169-171

Ultrastructural and Cytochemical Identification of Peroxisomes in the Ciliate Ichthyophthirius multifiliis

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Ultrastructural and Cytochemical Identification of Peroxisomes in the Ciliate Ichthyophthirius multifiliis

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