part_of part of part of biological_process biological_process smooth Brucella lipopolysaccharide macrophage lipid raft smooth LPS and macrophage lipid raft interaction The chemical action and protien bindings involved in smooth Brucella LPS interacting with marcophage lipif raft, which lead to the engulfment of smooth Brucella into a macrophage. YL smooth Brucella entry into macrophage