Deletion of 1B2⁺ CD8⁺ cells after transplantation in both DST-treated and non-DST–treated mice. The spleens (left panel) and lymph nodes (right panel) from naive (▪), DST-treated (□), and non-DST–treated (□) 2C_F1mice 120 days after transplantation were collected and the percentages of 1B2⁺ CD8⁺ cells were compared. The percentages of 1B2⁺ CD8⁺ cells in both DST-treated and non-DST–treated mice were significantly reduced compared with that in the naive mice (*P < .001).