摘要：Listeria monocytogenes , is factor which is fairly widespread in the environment. It is an important problem for world food industry due to pass by contagion to human being from kitchen by contamination of foods in food chain. In this article, it is mentioned that the contamination of L. monocytogenes with milk and cheese that is a product of milk having a wide consumption area and being easily contaminated by outside factor and a suitable medium for growing up of many microorganisms.
