Hematologic parameters from secondary reconstituted mice. Platelet (upper panel left), plasma TPO (upper panel right), hematocrit (lower panel left), and nucleated blood cell (lower panel right) levels in secondary recipients transplanted with spleen cells from four primary MPZenTPO recipients killed 4 (2 mice) or 6 (2 mice) months after transplantation. Each point represents an individual mouse with identical values superimposed. Curves are drawn from mean values. Data from 6, 10, or 9 secondary recipient mice are represented 85, 165, or 350 days after transplantation, respectively. Only 1 of these 10 mice followed for more than a year died (314 days after transplantation).