Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000144189 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Parotid degeneration secretion of amylase in vitro in the rat following sympathectomy.
Q J Exp Physiol
January 1982
After extirpation of the superior cervical ganglion in the rat a degeneration secretion of amylase occurs in an in vitro preparation of the parotid gland. It can be detected about 14 h after the sympathectomy, reaches a maximum after about 17 h and then slowly subsides. It is abolished by atenolol, but not by dihydroergotamine or atropine, nor by tetrodotoxin.
View Article and Find Full Text PDFThe ultrastructural distribution of Mg2+ -dependent adenosine triphosphatase (ATPase) activity has been investigated in the salamander and frog pancreas by using glutaraldehyde fixations and a modified Wachstein-Meisel reaction medium. In both species the reaction product (lead phosphate) was found associated with the plasma membrane external side of all islet cell types (B-, A- and D-cells) and of acinar and ductular/centro-acinar cells. Except the apical pole of salamander acinar and centro-acinar cells, usually devoid of reaction, no preferential distribution of enzyme activity depending on endocrine or exocrine cell aspects could be observed.
View Article and Find Full Text PDFThe intrinsic innervation in the pancreas of newts Triturus vulgaris, Tr. montandoni and Notophthalmus. All the investigated species display: cholinergic innervation better developed than adrenergic, no qualitative differences regarding the fine structure of nerve fibers and terminals as compared to that previously described in the pancreas or in other glands, axo-axonal contacts.
View Article and Find Full Text PDFSome morphological aspects of the innervation of a spider's silk gland.
Tissue Cell
October 2012
Deparment of Entomology, North Carolina State University, Raleigh, N.C. 27607.
A structure in the ampullate silk gland of an orb-weaving spider, previously thought to be a pressure receptor, was studied by electron microscopy to clarify its sensory function. This lamellated 'bulbous region' is situated between the gland and the beginning duct, which consists of a layered, acellular matrix (muco-protein), surrounded by a flat epithelium and partly covered by connective tissue. The epithelial cells are densely filled by a mesh-work of microtubules and interconnected by extensive cell junctions, both indicating exposure to mechanical stress.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!