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Abstract A total of 79 Listeria species isolated from 650 samples (500 dairy products, 50 minced meat and beef burger, 50 chicken fillet, and 50 seafood).25 isolates identified as L. monocytogenes. 14 selected L. monocytogenes isolates (5from dairy products, 5 from sea food, 2 from meat and 2 from chicken fillet) and reference strain were characterized serologically and characterized by determination of some virulence attributes, Detection of lectihimase activity, hemolysis, motility, pathogenicity in rabbit and mice, In vitro sensitivity pattern against 17 chemotherapeutic agents, Plasmid profile analysis and Detection of listeriolysin O using SDS-PAGE. |