<qa>  What is the effect of haematopoietic growth factors on neutrophil recoveryThe effect of haematopoietic growth factors on neutrophil recovery after allogeneic bone marrow transplantation is well recognized. Recent laboratory studies demonstrated that these cytokines may also modify T-cell and dendritic cell function, but whether the effect is strong enough to alter the risk of graft-versus-host disease GvHD is unclear. 