Blood and Bone Marrow Basics

In order to understand bone marrow failure bone marrow failure: A condition that occurs when the bone marrow stops making enough healthy blood cells. The most common of these rare diseases are aplastic anemia, myelodysplastic syndromes (MDS) and paroxysmal nocturnal hemoglobinuria (PNH). Bone marrow failure can be acquired (begin any time in life) or can be… diseases like aplastic anemia aplastic anemia: (ay-PLASS-tik uh-NEE_mee-uh) A rare and serious condition in which the bone marrow fails to make enough blood cells - red blood cells, white blood cells, and platelets. The term aplastic is a Greek word meaning not to form. Anemia is a condition that happens when red blood cell count is low. Most… , MDS and PNH, it's important to know certain facts about blood and bone marrow bone marrow: The soft, spongy tissue inside most bones. Blood cells are formed in the bone marrow. . This section provides the basic information you need to know about the types of blood cells, what they are and how blood cells are made. It also discusses some basic blood and bone marrow tests.