Assertion: tonsil's cell | /r/HasProperty | some endothelial cell nuclei
Facets:
Source sentences:
text: You should be able to see: 1) reticular cells spanning the sinus, 2) some endothelial cell nuclei defining the inner wall of the sinus (adjacent to the lymphatic follicles), and 3) circulating lymphocytes and macrophages in the lumen.