Assertion: antibody's antigen | /r/HasProperty | bound to antibody
Facets:
Source sentences:
text: (3) secreted antigens bound to antibody can form immune complexes that can be processed by dendritic cells, which then proceed to activate NK cells (12).
text: (The more antigen in the sample, the more Ag-Ab complexes are formed and so there are less unbound antibodies available to bind to the antigen in the well, hence "competition".)