Aggregative properties of different cell types of the fresh-water spongeEphydatia fluviatilis isolated on ficoll gradients
- 1 January 1977
- journal article
- research article
- Published by Springer Nature in Wilhelm Roux' Archiv für Entwicklungsmechanik der Organismen
- Vol. 181 (2) , 151-161
- https://doi.org/10.1007/bf00848439
Abstract
Cell suspensions of the fresh-watersponge Ephydatia fluviatilis have been fractionated by means ofFicoll gradient centrifugation. Three fractions were isolated. The densest contains archeocyte-like cells only; the intermediate fraction is very rich in choanocytes, and the lightest is a mixture of cell types. Earch fraction shows specificaggregative properties and potentialities to reconstitute functional sponges. It appears that the sequence of reconstitution events can be selectively altered by certain disequilibria in the cell population These preliminary results constitute a first approach to the analysis ofcell type specificity in sponges.Keywords
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