Patients who received a cord blood unit with a one or two HLA antigen mismatch did as well as those who were given a bone marrow transplant with one antigen mismatch from an unrelated donor. Patients transplanted with bone marrow that was fully matched did better than the other patients, but there were no fully matched cord blood recipients for comparison. Cord blood is already well accepted as a source of hematopoietic (blood forming) stem cell transplants for children.
Source: Lifestylenews
Read Statement of the Holy See on adult stem cells