Assertion: plasma's antibody | /r/HasProperty | anti-b
Facets:
Source sentences:
text: There are four ABO groups: Group A: The surface of the red blood cells contains A antigen, and the plasma has anti-B antibody.
text: Thus, he discovered two antigens (agglutinogens A and B) and two antibodies (agglutinins - anti-A and anti-B).