Allogeneic transplants refer to stem cells or bone marrow that are collected from a donor and then given to the patient in the transplant process. This is why allogeneic transplants are also referred to as donor transplants.
In allogeneic transplants, donors can be related or unrelated to the patient. Donors are selected based on a number of criteria. To read more about the donor selection process, go to Stem Cells & Marrow Donors > Donor Selection.
The allogeneic blood and marrow transplant process usually follows these four phases: