muscle fiber

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muscle fiber

[′məs·əl ‚fī·bər]
(histology)
The contractile cell or unit of which muscle is composed.
References in periodicals archive ?
The cytoskeleton of the vertebrate smooth muscle cell.
In vitro, infected arterial smooth muscle cells accumulated cholesterol.
However, interrupting the Wnt signal caused myoblasts already on their way to becoming muscle cells to switch gear and develop into fat.
The symptoms associated with LAM are caused by the excessive growth of the muscle cells around the airways, and blood and lymph vessels.
Scientists had been worried that transplanting heart muscle cells derived from embryonic stem cells would promote arrhythmias.
Philippe Manasche of Hospital Bichat in Paris, France, whose group also used muscle cells, said that in some cases, improvement in blood pumping ability has lasted 2 years, the longest followup period to date.
To begin the conversion to heart muscle cells, Kong infected the fibroblasts with a specially designed virus that carried mouse transgenes - genes expressed by stem cells.
Specifically, muscle cells first acquire a mutation called a chromosomal translocation.
Using DNA samples from many hearts, the researchers estimated that a 20-year-old renews about 1percent of heart muscle cells in a year.
What we found was that dystrophin has a special 'claw' that is used to grab nNOS and bring it close to the muscle cell.
In contrast, when she used Calos' gene therapy technique to introduce the genes, the muscle cell contained high levels of dystrophin distributed along the length of the cell and the glowing protein stayed within the cell, suggesting that the abundant dystrophin repaired the ailing muscle.
Since it is known that unlike other vessels much of the abnormal neovasculature associated with tumors and other disease pathologies lacks an organized smooth muscle cell sheath, the authors believe this could explain in part the selective vascular disruptive effects seen in vivo.