So for the ten patients in the study, doctors used a low amount of radiation to destroy only some of their marrow.

VOA: special.2009.12.16

Joanne Kurtzberg is chief of the Blood and Marrow Transplantation Center at the Duke University Medical Center.

VOA: special.2011.02.01

Doctors first used chemicals to destroy the children's own marrow, then replaced it with healthy marrow.

VOA: special.2009.12.16

In other studies, bone marrow transplants cured severe sickle cell disease in almost two hundred children.

VOA: special.2009.12.16

Their major organs are already too damaged to have all their bone marrow destroyed.

VOA: special.2009.12.16

Ten patients in all were treated in a study with donated bone marrow.

VOA: special.2009.12.16

Doctors can collect it with a needle. But people who donate marrow must first have tests to make sure they are a good match for the patient.

VOA: special.2009.12.16

Researchers have long known that bone marrow produces and contains monocytes.

VOA: special.2009.08.25

The healthy marrow causes new blood cells to form.

VOA: special.2009.12.16

Marrow is a soft, spongy tissue inside bones.

VOA: special.2009.12.16

Then the patients received healthy marrow.

VOA: special.2009.12.16