Fig. 2. Changes in the proportion of lymphocyte subsets of T cells. The proportion of each lymphocyte subset of T cells is shown relative to total T cells (100%). After stellate ganglion block, the proportion of CD4⁺cells (the sum of CD29⁺cells and CD45RA⁺cells) increased (from 66.3 ± 8.5% to 68.7 ± 8.4%;P < 0.01), and that of CD8⁺cells decreased (from 33.7 ± 8.5% to 31.3 ± 8.4%;P < 0.01). The proportion of CD29⁺cells increased (from 30.9 ± 4.8% to 32.8 ± 6.4%;P < 0.05), but that of CD45RA⁺cells did not change (from 35.4 ± 10.5% to 35.9 ± 11.9%). In each treatment, left and right columns represent before and after treatments, respectively. SGB = stellate ganglion block; IM = intramuscular injection; NS = normal saline injection. Mean values are shown, n = 10.