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Journal ArticleDOI

The histochemistry of the neurosecretory system in Cerebratulus marginatus (Heteronemertini).

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TLDR
The chemical nature of neurosecretory material of the brain and lateral nerve cords in the heteronemertean Cerebratulus marginatus has been examined by a variety of histochemical methods and it appears that the secretions of the cell types are characterized by a content of cystine and tryptophan or other 3-indolyl derivatives.
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This article is published in General and Comparative Endocrinology.The article was published on 1969-10-01. It has received 9 citations till now.

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Journal ArticleDOI

Ultrastructure and histochemistry of neurosecretory cells and neurohaemal areas in the pond snail Lymnaea stagnalis (L.)

TL;DR: Seven types have been distinguished within the class of Gomori-positive cells on the basis of different staining reactions with the alcian blue/alcian yellow technique, which revealed that each of the histochemically distinguished secretory substances consists of elementary granules which differ in size and appearance from each other and from the neurosecretory elementarygranules which have been described in the cerebral ganglia and in the lateral lobes.
Journal ArticleDOI

The evolution and comparative physiology of terrestrial and freshwater nemerteans

Janet Moore, +1 more
- 01 May 1985 - 
TL;DR: The relationships between the known terrestrial and semi‐terrestrial nemerteans, comprising seven genera and 15 species, are defined and their geographic distribution is discussed.
Book ChapterDOI

Cellular Dynamics in Invertebrate Neurosecretory Systems

TL;DR: This chapter discusses the cellular dynamics in invertebrate neurosecretory systems and the techniques of electron microscope autoradiography and chromatographic and electrophoretic microtechniques have the potential to provide valuable information on granule processing and transport.
Journal ArticleDOI

The nervous systems of Pilidiophora (Nemertea)

TL;DR: Although in H. dubia some characters of the nervous system show the plesiomorphic state, the morphology of the cerebral organ provides an apomorphic character for a taxon Pilidiophora, which is now supported as the sister group to heteronemerteans.
Journal ArticleDOI

Histochemical observations on the localization of some enzymes associated with digestion in four species of Brazilian nemerteans.

Ray Gibson
TL;DR: The processes of digestion have been investigated histochemically for several nemertean species and results so far obtained suggest that although the fundamental digestive sequence is essentially similar for all the species, differences in details can be related either to their systematic position or mode of life.
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