2003 Volume 67 Issue 2 Pages 420-422
The natural killer (NK) activity of blood mononuclear cells and splenocytes in aged mice fed on a diet containing Lactobacillus casei strain Shirota (LcS group) was significantly (P<0.01) higher than that in mice fed on a diet without LcS. In the LcS group, there was a significant positive correlation (r=0.63, P<0.01) between the NK activity of blood mononuclear cells and the NK activity of splenocytes.
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