Absolute counts of splenocyte subsets after congenic transplantation. Absolute counts of splenic subsets after transplantation of 200 HSCs (bar a) or 200 HSCs and 3000 CLPs (bar b) on day 14 (A, n = 5) and day 35 (B, n = 12) after transplantation. ▧ indicates residual host cells; □, HSC-derived cells; and ▦, CLP-derived cells. Data represent mean values. On day 14, CLP-derived B220⁺ cells accounted for the significantly higher number of total B220⁺ cells (*P = .007).