Hematopoietic reconstitution in the SCID-hu mice with 10,000 freshly purified human fetal BM CD34⁺CD38⁻ cells. (A) Intrathymic T-cell development, (B) B-cell differentiation, and (C) myeloid differentiation of purified CD34⁺ CD38⁻ cells in implanted human fetal bone fragment. See Fig 4 legend for additional information.