What Is a Bone Marrow Transplant? Replaces unhealthy cells with healthy ones Related Resources • Minority Marrow Matches Fewer • Articles and links on bone marrow transplants • Articles and links on leukemia From Other Guides • Breast Cancer and Bone Marrow Transplants • Transplants in Children Elsewhere on the Web • National Marrow Donor Program • American Bone Marrow Donor Registry Mary Kugler, MSN, RN,BC Guide to Rare/Orphan DiseasesWhat is a bone marrow transplant? A bone marrow transplant is when special cells (called stem cells) that are normally found in the bone marrow are taken out, filtered, and given back either to...