Absolute numbers of lymphocytes and gene-marked lymphocytes and their function 4 months after GT with transduced lin− cells or transduced wm cells. (A) Absolute numbers of thymocytes (mean ± SEM). *Significantly greater in 200 + 4mERTwm mice compared with 200−NoERTwm, 200−NoERTlin−, and 200 + 1mERTlin− (P < .05). **Significantly greater in all mice receiving transduced wm compared with transduced lineage-depleted marrow (P < .05). (B) Absolute numbers of splenocytes (mean ± SEM). *Significantly greater in 200 + 4mERT wm mice compared with all other conditions (P < .05). **Significantly greater in 200 + 4mERTwm mice compared with all other conditions except 200 + 4mERTlin− (P < .05). (C) Absolute numbers of gene-marked thymocytes (mean ± SEM). *Significantly greater than 200−NoERTlin− (P < .05). (D) Absolute numbers of gene-marked splenocytes (mean ± SEM). *Significantly greater than 200−NoERTlin− (P < .05).