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A histochemical and cytological study of the development of the shell in the gastropod, Helisoma duryi eudiscus.

The mechanism of the formation of the molluscan shell has been the subject of controversy since the first observations were made by Reaumer in 1709 on the normal growth and regeneration of shells. There is considerable agreement on the sites of secretion of the shell materiel and the histological identity of these tissues. However, controversy centres about the mechanism by which the organic matrix of the inner layers of the shell is released into the extra-pallial space, by which it is deposited and subsequently calcified. The controversy has, of late, gained importance in that it provides excellent possibilities for the study of the organic composition of the calcifying matrices and their manner of calcification.

Identiferoai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.115550
Date January 1964
CreatorsKapur, Shakti. P.
ContributorsGibson, M. (Supervisor)
PublisherMcGill University
Source SetsLibrary and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada
LanguageEnglish
Detected LanguageEnglish
TypeElectronic Thesis or Dissertation
Formatapplication/pdf
CoverageDoctor of Philosophy. (Department of Biology.)
RightsAll items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated.
Relationalephsysno: NNNNNNNNN, Theses scanned by McGill Library.

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