Assertion: hen's bone | /r/Synonym | medullary bone
Facets:
value: because of its instability
type: CAUSE
Source sentences:
text: The calcium for the eggshell comes from the diet, a special bone called medullary bone (found in the cavity of long bones)and the skeleton.
text: This bone is called medullary bone and because of its instability, provides a very ready source of calcium for eggshells.