Babesia bovis (= argentina): changes in erythrophylic and associated proteins during acute infection of splenectomized and intact calves.

Saline eluates were prepared from sucrose-washed erythrocytes of cattle infected with B. bovis (= argentina). Fibrinogen, plasminogen and IgG2 were constituent proteins of the eluates and all three proteins increased in concentration during infection. The significance of the protein changes and their contribution to coagulation and fibrinolysis during infection are discussed.