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Rats associated with a human faecal flora were dosed for 3 d with supplements of live Lactobacillus acidophilus NCFM or Bifidobacterium adolescentis 2204. The treatments suppressed the β-glucosidase and β-glucuronidase activities in the colon. The effect was only statistically significant for the L. acidophilus treated rats.
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Cole et al. (1989) studied this question.
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