Peripheral blood counts and transfusions. Values of peripheral blood counts are depicted on a logarithmic scale as a function of time (in days). The y-axis represents the numbers of thrombocytes (10⁹/L), leukocytes (10⁹/L), and the hemoglobin level (g/dL). Top panel: Case 1. Bottom panel: Case 2. represents the transfusion of 3 units of red blood cells.