Assertion: cystic artery's variation | /r/CapableOf | involve injecting obstructive material
Facets:
value: into the ductus
type: TRANSITIVE-OBJECT
Source sentences:
text: A modern variation, which is also known as a vasectomy even though it does not include cutting the vas, involves injecting an obstructive material into the ductus to block the flow of sperm.