F. Nagao et al., Effects. of a fennented milk drink containing Lactobacillus casei strain Shirota on the immune system in healthy human subjects, BIOS BIOT B, 64(12), 2000, pp. 2706-2708
Nine healthy volunteers drank fermented milk containing 4x10(10) live cells
of Lactobacillus casei strain Shirota daily for 3 weeks, and their NK acti
vity and other immunological functions were measured, NK activity significa
ntly increased (p<0.01) 3 weeks after the start of intake and remained elev
ated for the next 3 weeks. The effect was particularly prominent in low-NK-
individuals.