The openings of transverse tubules in frog twitch fibers are described. The tubules open to the extracellular space by a narrow neck, with an inner diameter of 20 nm. The most peripheral portion of the tubules is tortuous and has a variable diameter. The similarity in size of the openings of T tubules and caveolae and the meandering path of the tubules are sufficient to account for the paucity of observed openings.
Article| February 01 1975
Size and shape of transverse tubule openings in frog twitch muscle fibers.
Online Issn: 1540-8140
Print Issn: 0021-9525
J Cell Biol (1975) 64 (2): 493–497.
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C Franzini-Armstrong, L Landmesser, G Pilar; Size and shape of transverse tubule openings in frog twitch muscle fibers.. J Cell Biol 1 February 1975; 64 (2): 493–497. doi: https://doi.org/10.1083/jcb.64.2.493
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