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A cell type in sponges involved in the metabolism of glycogen

The gray cells

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Summary

The gray cells of four orders of demosponges contain basophilic inclusions and glycogen. They are capable of synthesis and accumulation of glycogen and responsible for its transfer to sites of more intense metabolism (growth, bud, blastema). They do not occur in larvae; but all the phases of their differentiation from the flagellar cells of the larva have been demonstrated.

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This study was supported by funds provided by Centre national de la recherche scientifique (RCP CNRS 248)

This paper is part of a dissertation submitted for the degree of Docteur Es-Sciences at Paris University (28 June 1975)

The author is greatly indebted to Mme P. Levi for technical assistance

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Boury-Esnault, N. A cell type in sponges involved in the metabolism of glycogen. Cell Tissue Res. 175, 523–539 (1977). https://doi.org/10.1007/BF00222416

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