Assertion: test antigen | /r/CapableOf | coat the well
Facets:
Source sentences:
text: The primary antibody with an attached (conjugated) enzyme is added, which binds specifically to the test antigen coating the well.
text: -Then the serum is added, which contains a mixture of the serum antibodies, of unknown concentration, some of which may bind specifically to the test antigen that is coating the well.