Platelet (top panel), nucleated blood cell (center panel), and hematocrit (lower panel) levels in mice transplanted with MPZenTPO (▪, •, ♦, ▴; plain lines) or MPZen Neo (□, ○, ▵; dashed lines) virus-infected bone marrow cells. Each point represents the mean value (±SD) from recipients (n = 2 to 14) obtained from the same infected group. Different symbols correspond to different infected groups; these are the same as the ones used in Fig 2. In the center panel, the histogram represents the mean number (±SD) of blast cells (Bl), myeloid precursor cells (My), neutrophils (Po), lymphocytes (Ly), eosinophils (Eo), and erythroblasts (Er) counted in the peripheral blood from MPZenTPO (▪, n = 11) or MPZenNeo (□, n = 5) recipient mice studied between 53 and 56 days after transplantation.