has_part has part has_part part_of immortal macrophage cell line cell macrophage process of establishing Brucella infection in macrophage host-Brucella interaction macrophage - Brucella interaction A process that Brucella and macrophage have effects upon each other during the course of Brucella’s establishing the infection and the macrophage’s responses in order to fight the infection. host-Brucella interaction between macrophage and Brucella macrophage anti-Brucella process Brucella