Immune recovery in PB and LTs for 4Gyx2 and 5Gyx2 TBI-transplanted monkeys. The total number of lymphocytes (A) and CD4⁺ cells (B) in PB, the retention of radiotracer in spleen (C), axillary (D) and submandibular (E) LNs relative to the baseline retention, and the maximum liver (F) SUV for up to 1 year following 4Gyx2 TBI of ZG21 (blue), ZH32 (red), and ZG41 (green) and 5Gyx2 of ZG70 (black dash) and ZJ37 (brown dash) rhesus macaques.