title: Properdin acting as a C3 convertase.
mesh_terms: D000818:Animals; D003176:Complement C3; D003165:Complement System Proteins; D006801:Humans; D007122:Immunoelectrophoresis; D011414:Properdin / Q000378:metabolism*; D011817:Rabbits / Q000276:immunology
chemical_list: D003176:Complement C3; D011414:Properdin; D003165:Complement System Proteins