That division of haematology concerned with immune, or antigen-antibody reactions and with related changes in the blood. ... (05 Mar 2000) ... 
Type: Term Pronunciation: im′yū-nō-hē′mă-tol′ŏ-jē Definitions: 1. That division of hematology concerned with immune, or antigen-antibody reactions, and with related changes in the blood.
the study of blood and blood-forming tissue in relation to the immune response.