title: A plaque assay on agar for detection of gram-negative bacilli sensitive to complement.
mesh_terms: D001419:Bacteria / Q000276:immunology / Q000302:isolation & purification*; D001770:Blood Bactericidal Activity; D003165:Complement System Proteins; D004926:Escherichia coli / Q000302:isolation & purification; D006462:Hemolytic Plaque Technique; D006801:Humans
chemical_list: D003165:Complement System Proteins