Human multilineage reconstitution of NOD/SCID mice with CD34⁺flt3⁺CB cells. Representative human reconstitution and lineage analysis of a mouse that received 2500 CD34⁺flt3⁺CB cells 6 weeks before analysis. Mouse shows low (0.23%) levels of human (CD45) engraftment but significant human B (CD19) and myeloid (CD66b/CD15/CD33) reconstitution.