Orange juice is the liquid extract of the fruit of the orange tree, extracted by squeezing oranges. It comes in several different varieties, including blood orange. In American English, the beverage name may be abbreviated as OJ.
Summary Summary. Listen. Myelofibrosis is a disorder of the bone marrow, in which the marrow is replaced by fibrous (scar) tissue. When the bone marrow is scarred, it cannot make enough blood cells. This leads to anemia, weakness, fatigue, and often, swelling of the liver and spleen.
Myelofibrosis usually develops slowly. In its very early stages, many people don't experience signs or symptoms. As disruption of normal blood cell production increases, signs and symptoms may include: Feeling tired, weak or short of breath, usually because of anemia.