Assertion: lung's wall | /r/CapableOf | lack smooth muscle fibers
Facets:
Source sentences:
text: The pulmonary capillary network consists of tiny vessels with very thin walls that lack smooth muscle fibers.
text: The pulmonary capillary network consists of tiny vessels with very thin walls that lack smooth muscle fibers.
text: The pulmonary capillary network consists of tiny vessels with very thin walls that lack smooth muscle fibers.