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