| lactococcus | A genus of gram-positive, coccoid bacteria mainly isolated from milk and milk products. These bacteria are also found in plants and nonsterile frozen and dry foods. Previously thought to be a member of the genus streptococcus (group n), it is now recognised as a separate genus. (12 Dec 1998) |
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| lactococcus lactis | A non-pathogenic lactococcus found in dairy products and responsible for the souring of milk. (12 Dec 1998) |