Assertion: muscle fiber's filament | /r/MadeOf | the protein myosin
Facets:
value: primarily
type: DEGREE
Source sentences:
text: Thick filaments consist primarily of the protein myosin, held in place by titin filaments.
text: Thin myofilaments consist primarily of actin protein while thick filaments consist of myosin protein.
text: Thick filaments consist primarily of the protein myosin.