title: The C3-activator system: an alternate pathway of complement activation.
mesh_terms: D000818:Animals; D001609:Beta-Globulins / Q000302:isolation & purification; D001665:Binding Sites; D002848:Chromatography, DEAE-Cellulose; D002850:Chromatography, Gel; D003165:Complement System Proteins; D004589:Electrophoresis, Disc; D006801:Humans; D007120:Immunochemistry; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007136:Immunoglobulins; D008970:Molecular Weight; D012911:Snakes; D014688:Venoms
chemical_list: D001609:Beta-Globulins; D007136:Immunoglobulins; D014688:Venoms; D003165:Complement System Proteins