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.
1 Chronic eosinophilic leukemia is a disease in which too many white blood cells (eosinophils) are made in the bone marrow. 2  Signs and symptoms of chronic eosinophilic leukemia include fever and feeling very tired. Primary myelofibrosis is a disease in which abnormal blood cells and fibers build up inside the bone marrow. 2  Symptoms of primary myelofibrosis include pain below the ribs on the left side and feeling very tired. 3  Certain factors affect prognosis (chance of recovery) and treatment options for primary myelofibrosis.