Oral intake of heat-killed Lactobacillus plantarum L-137 decreases the incidence of upper respiratory tract infection in healthy subjects with high levels of psychological stress.

J Nutr Sci · 2013 · PMC4153334 · PMID 25191589

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highly significantno p-value reported

In the measurements of unstimulated proliferation, percentage of IL-4-producing cells, or Th1:Th2 ratio, a highly significant time point effect was observed ( Table 3 ).

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