Olecranon bursitis causes. 1  pressure: repeated leaning on the elbow on a hard surface, like a table. 2  trauma: a hard fall on the tip of the elbow may stir up some swelling in the bursa. 3  infection: a cut or scrape on the elbow may get infected and spread deeply into the bursa tissue.
angiogenesis factor a substance that causes the growth of new blood vessels, found in tissues with high metabolic requirements such as cancers and the retina. It is also released by hypoxic macrophages at the edges or outer surface of a wound and initiates revascularization in wound healing.
Definition. 1  Fetal hemoglobin (Hemoglobin F), Alkali-resistant hemoglobin, HBF (or Hb F), is the major hemoglobin component in the bloodstream of the fetus. After birth, it decreases rapidly until only traces are found in normal children and adults.