Despite a Slower Engraftment,cord Blood as a Source of Transplanted

Despite a slower engraftment,cord blood as a source of transplanted hematopoietic stem cells is better than bone marrow or than stem cells derived from peripheral blood in that _____.(Select all that apply.)

A) the recipient does not need to undergo myeloablative therapy
B) there is a higher degree of tolerance for HLA disparity
C) there is a lower incidence of graft-versus-host disease
D) cord blood can be infused directly into the bone marrow of recipients
E) a larger number of stem cells express CD34.