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.
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy; it acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).herefore, the auxin function in the ABA-mediated response is likely specific to seed dormancy/germination inhibition by regulating a seed-specific ABA signaling component. ABI3, ABI4, and ABI5 are three key components of seed-specific ABA signaling.