A genus of microaerophilic to facultatively anaerobic bacteria (family Lactobacillaceae) containing gram-positive, spheric cells that may, under certain conditions, lengthen and become pointed and even form rods. Lactic and acetic acids are produced by these organisms. They are found in plant juices and in milk. The type species is Leuconostoc mesenteroides.
[G. leukos, white, + nostoc, a genus of algae (a word coined by Paracelsus)]
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Examples: glitazone, GI cocktail, etc.