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An investigation of ECM secreting structures in the gastrula of the starfish Pisaster ochraceus

Published online by Cambridge University Press:  16 December 2010

Arkadiy Reunov*
Affiliation:
A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, Palchevsky St., 17, Vladivostok 690041, Russia
Bruce Crawford
Affiliation:
University of Victoria, Division of Medical Science, Victoria, BC V8W 2Y2, Canada
*
Correspondence should be addressed to: A. Reunov, A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences, Palchevsky St., 17, Vladivostok 690041, Russia email: arkadiy_reunov@hotmail.com

Abstract

To highlight the diversity of extracellular embryonic matrix (ECM) secreting structures in the gastrulae of the starfish Pisaster ochraceus the localization of antibody generated to hyaline layer, was studied. It was shown that hyaline layer epitope takes place in the cortical granules. Moreover, this material was revealed in secretory vacuoles and secretory vesicles which are situated in the apical parts of ectoderm cells. Besides, the same molecules were found in the yolk granules having loosened content. It seems likely that in P. ochraceus the ECM is secreted by four types of secretory structures.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2010

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