#myofibril__myofibrilla  one of many contractile filaments that make up a striated muscle fiber
  supertype:  fibril__filament__strand  a very slender natural or synthetic fiber
  part:  sarcoplasm  sarcomere
  part of:  striated_muscle_cell__striated_muscle_fiber  an elongated contractile cell in striated muscle tissue
     part of:  striated_muscle__skeletal_muscle__striated_muscle_tissue  muscle tissue characterized by transverse stripes

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