The relationship between the infused cell doses of the dominant unit and neutrophil engraftment. The cumulative incidences of sustained donor neutrophil engraftment after myeloablative conditioning (n = 61) according to the infused (A) TNC dose, (B) CD34⁺ cell dose, (C) CFU dose, and (D) CD3⁺ cell dose of the dominant unit are shown. An infused CD34⁺ cell or CFU dose of the dominant unit above or equal to the median is associated with a higher likelihood of sustained engraftment and faster neutrophil recovery.