If the marrow given is taken from another person, the transplant is called an allogeneic transplant. This procedure is called apheresis and usually takes 3 or 4 hours over one or more days to complete. The stem cells may be treated with drugs to kill any cancer cells and then frozen until they are transplanted back to the patient. This procedure may be done alone or with an autologous bone marrow transplant. Some centers have looked into transplants after first remission as a preventative measure.
Information is again key to getting a grip on transplants.
They have a new website with an archive of their information and online books. Thanks to the people at COBE BCT TM , we now have a good introduction to stem cell collection . Manufactured by Amgen under the name Neupogen , it is often given during or after chemotherapy to boost the immune system. It is also used before stem cell collection to boost the granulocytes prior to collection. The Hodgkin's High-dose Chemotherapy and Transplant Information page is a great collaboration.