IUHCT results in sustained engraftment in Fancc^–/– mice. (A) Flow cytometry of peripheral blood from E14-injected Fancc^–/– and WT fetuses. (B) Engraftment observed across cell types. (C) Lineage composition of GFP⁺ engrafted cells. (D) BM GFP⁺ cell engraftment. (E) Complete blood counts of injected and noninjected Fancc^–/– and WT animals. (F) Representative BM CFU-Cs. (G) Representative femur GFP⁺ staining from 6 months post-IUHCT. ∗∗∗P < .001; ∗∗P < .002; ∗P < .033; ns, nonsignificant.