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Science 5 January 1973:
Vol. 179. no. 4068, pp. 88 - 90
DOI: 10.1126/science.179.4068.88
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Articles

Membrane Recycling: Vesiculation of the Amoeba Contractile Vacuole at Systole

James A. McKanna 1

1 Department of Anatomy, University of Wisconsin, Madison 53706

Ultrastructural data on the protozoan Amoeba proteus support a model of membrane recycling. At systole the amoeba contractile vacuole fuses with the cell surface and expels its contents. Observations by electron microscopy indicate that, as the vacuole empties, its bounding membrane transforms into tiny (35 nanometers in diameter) vesicles, identical to the vesicles that segregate fluid and contribute to the diastolic vacuole.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Hyperosmotic stress leads to reversible dissociation of the proton pump-bearing tubules from the contractile vacuole complex in Paramecium.
M Ishida, A. Fok, M. Aihara, and R. Allen (1996)
J. Cell Sci. 109, 229-237
   Abstract »    PDF »
Osmoregulation in Paramecium: the locus of fluid segregation in the contractile vacuole complex.
M Ishida, M. Aihara, R. Allen, and A. Fok (1993)
J. Cell Sci. 106, 693-702
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Science. ISSN 0036-8075 (print), 1095-9203 (online)