Assertion: blood vessel | /r/HasProperty | vein
Facets:
Source sentences:
text: When a blood vessel (a vein or an artery) is injured, the body uses platelets (thrombocytes) and fibrin to form a blood clot to prevent blood loss.
text: Blood vessels that take blood back to the heart are veins.
text: Blood vessels that take blood back to the heart are veins.
text: Blood vessels that take blood back to the heart are veins.