FIG. 2.
Effect of oral administration of L. casei strain Shirota on pulmonary NK cell activity. Lung cells from mice fed either the control diet (○) or the L. casei strain Shirota diet (•) for 4 months were examined using a short-term 51Cr release assay. The E/T ratio was 6.25:1 (A) or 12.5:1 (B). Each bar represents the mean value for 5 mice. *, statistically significant difference from the control value by Student’s t test at a P value of <0.05; NS, no significant difference from the control value.