The change of a skeletal muscle satellite cell from a mitotically quiescent to a mitotically active state following exposure to some activating factor such as a cellular or soluble ligand. In adult muscle, satellite cells become activated to divide and differentiate in response to muscle damage. [GOC:mtg_muscle, PMID:23303905]
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M5: Ontology GO: Gene Ontology GO:BP: GO Biological Process
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