This protocol identifies a standard-of-care method for unrelated stem cell transplantation in adults. Performing this service in a consistent and documented fashion allows investigators to obtain informed consent from recipients. Data is tabulated locally for quality-control comparisons with nationally-reported standards. As a condition of maintaining transplant center status and to have acess to NMDP-registered donors, UCSF submits clinical and outcome data to the NMDP. As a result, UCSF is contributing to the resolution of remaining uncertainties regarding particular transplantation practices.