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J Muscle Res Cell Motil. 1983 Apr;4(2):233-52.

Junctional feet and particles in the triads of a fast-twitch muscle fibre.


Structural details of junctional feet in triads of fish muscle are described. These feet have a less dense central core and contact both sarcoplasmic reticulum and T-tubule membranes at tetragonally disposed sites. The distribution of intramembraneous particles differs at the junctional T-membrane, and the junction is asymmetric.

[Indexed for MEDLINE]

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