Name: What is a stem cell or bone marrow transplant?
Creator: NHS website
License: https://developer.api.nhs.uk/terms

A stem cell or bone marrow transplant involves replacing damaged blood cells with healthy ones.
It's used to treat some blood cancers, blood conditions or conditions caused by problems with your immune system.
The treatment uses stem cells, which are a type of cell that can turn into different types of blood cell. They're found in your blood and bone marrow (inside your bones).
The treatment usually involves destroying any unhealthy blood cells in your body and then giving you healthy stem cells so your body starts to make new, healthy blood cells.
You may be able to use your own stem cells, taken from your blood or bone marrow, or you may need to use a donor.
The procedure will be done in hospital, where you will need to stay in a germ-free room away from other people until doctors know the transplant has worked.
It can take some time to get your body ready to have a stem cell or bone marrow transplant, and up to a year to fully recover.