''Lactobacillus rhamnosus'' ''Lactobacillus rhamnosus'' is a bacterium that was originally considered to be a subspecies of ''L. casei'', but later genetic research found it to be a species of its own. Some strains of ''L. rhamnosus'' are being used as probiotics. The species is sometimes used in yogurt and other dairy products. Some studies have been done on its ''in vivo'' effects.
More at: Lactobacillus rhamnosus