Association of umbilical cord blood nucleated cell dose with speed of myeloid engraftment. Higher graft nucleated cell doses result in shorter time to neutrophil recovery. However, the 3 highest cell doses have similar Kaplan-Meier probability of achieving engraftment. Reproduced from Rubinstein et al²⁹  with permission, for English-language use only. Copyright 1998 Massachusetts Medical Society. All rights reserved.