Figure 2: Immunoassay of natural killer (NK)T and NK cells before and after hydrogen inhalation in non-small cell lung cancer patients. Note: (A) Changes in the number of NKT cells. (B–D) Test results of the NK subsets. The parallel red long lines in the figure represent the normal range, the black short lines represent the average value at each time point, and the pink cell names represent the abnormal indicators before hydrogen treatment. Data were analyzed by repeated measures analysis of variance followed by Bonferroni’s multiple comparison test. *P < 0.05, **P < 0.01.