Chimerism and skin graft survival after treosulfan. (A) PBL donor-type chimerism (mean ± SEM) after recipient pretreatment with treosulfan (3 × 500 mg/kg) followed by transplantation (15 × 10⁶ BMCs) from B6-EGFP.Tg donor mice (•). ▴ indicates saline control mice. (B) Skin graft survival (EGFP.Tg and B10.A) performed 10 weeks after BMT. Each group contained 5 mice.