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! Homofermentative <ref>[https://books.google.com/books?id=bB3OBQAAQBAJ&pg=PA80&lpg=PA80&dq=what+is+obligatory+facultatively+heterofermentative&source=bl&ots=tCEyOH0UsQ&sig=20RUBx6bpjPudPTgnNEJgoD_rhg&hl=en&sa=X&ei=Z-10VZqvFIWyggTInIHYBw&ved=0CDEQ6AEwBg#v=onepage&q=what%20is%20obligatory%20facultatively%20heterofermentative&f=false Lactic Acid Bacteria: Microbiological and Functional Aspects, Fourth Edition. Sampo Lahtinen, Arthur C. Ouwehand, Seppo Salminen, Atte von Wright. CRC Press, Dec 13, 2011. Pg 80.]</ref>

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| L. acidophilus || L. brevis || L. casei