Freeze-fracture studies of frog atrial fibres.
J Cell Sci
; 22(2): 427-34, 1976 Nov.
Article
in En
| MEDLINE
| ID: mdl-1002776
ABSTRACT
The freeze-fracturing technique was used to characterize the junctional devices involved in the electrical coupling of frog atrial fibres. These fibres are connected by a type of junction which can be interpreted as a morphological variant of the "gap junction" or "nexus". The most characteristic features are rows of 9-nm junctional particles forming single or anastomosed circular profiles on the inner membrane face, and corresponding pits on the outer membrane face. Very seldom aggregates consisting of few geometrically disposed 9-nm particles are found. The significance of the junctional structures in the atrial fibres is discussed, with respect to present knowledge about junctional features of gap junctions in various tissues, including embryonic ones.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Intercellular Junctions
/
Myocardium
Limits:
Animals
Language:
En
Journal:
J Cell Sci
Year:
1976
Document type:
Article