Decrease of 1B2⁺CD8⁺ cells in 2C_F1 transgenic mice after DST. 2C_F1 mice were injected IV with splenocytes from BYJ mice. The percentages of 1B2⁺CD8⁺ cells (A) and 1B2⁺CD8^- cells (B) in spleen are shown from untreated 2C_F1 mice (day 0, □), day 4 (▪), day 18 (▧), and day 35 (▩) after DST. *P < .0001.