Assertion: cartilage's blood vessel | /r/AtLocation | the center of the osteon
Facets:
value: within a long opening
type: LOCATION
Source sentences:
text: A blood vessel and a nerve are found in the center of the osteon within a long opening called the Haversian canal, with radiating circles of compact bone around it known as lamellae.
text: A blood vessel and a nerve are found in the center of the osteon within a long opening called the Haversian canal, with radiating circles of compact bone around it known as lamellae.