Assertion: antibody's antigen | /r/CapableOf | enter the blood
Facets:
Source sentences:
text: When an antigen enters the blood or tissue fluids it is assumed that it will attach to the surface of any lymphocyte carrying reactive sites that correspond to one of its antigenic determinants.
text: When an foreign antigen enters the blood it combines with a few B-lymphocytes which then divide rapidly through mitosis forming a clone of plasma cells.