(A) The percentages of host-type (H-2^{b pos/d neg}) and donor-type (H-2^{b pos/d pos}) cells were determined by FACS analysis 9 months after conditioning in lymph node cells of control B10 and (B10 × B10.D2)F1 animals and representative F1 → B10 chimeras (no. 12 and no. 17, Table 1). (B) Analysis of donor-derived (H-2^dpos) lymphoid (T and B cells) and myeloid (granulocytes and macrophages) lineages in lymph node cells of a representative chimera (no. 12).