一组以一种在酸奶和其它乳制品中经常发现的含乳酸杆菌属鼠李糖乳杆菌（学名为Lactobacillus rhamnosus）的特别液体培养基喂食。
One lot were fed a special broth containing Lactobacillus rhamnosus, a gut-dwelling bacterium often found in yogurt and other dairy products.
通常，肉用动物都在可能被李氏杆菌感染的条件下被加工成肉制品。
Often, animals used for meat are processed in conditions that permit listeria to infect them.
1990年他开始负责莎拉·李公司的包装肉制品、烘品和饮食服务。
In 1990 he assumed responsibility for Sara Lee's Packaged Meats, Bakery and Foodservice businesses.
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