Assertion: thymus's lobe | /r/HasProperty | joined by isthmus
Facets:
Source sentences:
text: Appearance:rather lake a split golf ball, with the two hemispheric lobes joined by an "isthmus" extending across the underside of the windpipe; isthmus is larger in foals and asses than in adult horses.
text: It is a fairly large gland consisting of two lobes joined by a central mass, or isthmus .