Skeletal Satellite Muscle Cell
Satellite cells are located between the basement membrane and sarcolemma (cell membrane) of individual muscle fibers. They are able to differentiate and fuse to augment existing muscle fibers and to form new ones. These cells represent the oldest known adult stem cell niche, and are involved in the normal growth of muscle, as well as regeneration following injury or disease.
Source
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"University of Michigan."
http://umich.edu/education/med/m1/cellstissues/winter2009/materials
University of Michigan
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