part of part of in taxon myotube differentiation myotube differentiation involved in skeletal muscle regeneration biological_process GO:0014908 The process in which a relatively unspecialized cell acquires specialized features of a myotube cell. Myotube differentiation starts with myoblast fusion and the appearance of specific cell markers (this is the cell development step). Then individual myotubes can fuse to form bigger myotubes and start to contract. This process occurs as part of the process of skeletal muscle regeneration. Myotubes are multinucleated cells that are formed when proliferating myoblasts exit the cell cycle, differentiate and fuse. skeletal muscle tissue regeneration Vertebrata <vertebrates>