Assertion: skeletal system's bone | /r/MadeOf | bone marrow
Facets:
value: mainly
type: DEGREE
Source sentences:
text: Bones contain bone marrow.
text: Large bones such as the hips, pelvis and the femur mainly contain the bone marrow.
text: Bones contain bone marrow.
text: The spongy bones of the body contain bone marrow that produces red blood cells to replace those that have reached the end of their life span and what is lost during bleeding and hemorrhaging.