WBM and SP transplantations result in equivalent hematopoietic lineage reconstitution. Markers for B cell (B220), T lymphocyte (CD3), mature granulocyte (Gr-1), monocyte/macrophage (Mac-1) and erythroid (Ter-119) lineages were tested using a mouse lineage panel. For each marker, the percentage of lineage-positive cells as determined by FACS in WBM-transplanted mice was normalized to 1, and the corresponding percentage in bone marrow SP transplanted mice was adjusted accordingly. Transplantation of WBM and SP cells resulted in equivalent reconstitution of these lineages as no significant differences in the percent of lineage-positive cells for a given marker were seen between the two transplant types. A t-test was used for statistical analysis and error bars represent the s.d. from three independent experiments.