title: Punch hole method, a new technique of antibiotic concentration bio-assay. A preliminary report.
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis*; D001681:Biological Assay / Q000379:methods*; D001826:Body Fluids / Q000032:analysis*; D006801:Humans
chemical_list: D000900:Anti-Bacterial Agents