title: Chromogenic method to screen very large populations of bacteriophage plaques for the presence of specific antigen.
mesh_terms: D000956:Antigens, Viral / Q000032:analysis*; D010582:Bacteriophage lambda / Q000201:enzymology / Q000276:immunology*; D001435:Bacteriophages / Q000276:immunology*; D004396:Coloring Agents; D004926:Escherichia coli / Q000201:enzymology; D006735:Horseradish Peroxidase; D007124:Immunoenzyme Techniques; D010948:Viral Plaque Assay / Q000295:instrumentation / Q000379:methods; D001616:beta-Galactosidase / Q000032:analysis
chemical_list: D000956:Antigens, Viral; D004396:Coloring Agents; D006735:Horseradish Peroxidase; D001616:beta-Galactosidase