Assertion: muscle fiber's sarcomere | /r/CapableOf | appear as light and dark bands
Facets:
value: microscopically
type: MANNER
Source sentences:
text: These are repeating units made of actin and myosin that are found in muscle myofibrils, each called a. Myofibrils are made up of repeating sarcomeres, which appear as light and dark bands microscopically.