Vascular endothelial growth factor (VEGF) is a protein that plays a crucial role in the formation of blood vessels, a process known as angiogenesis. It is produced by various cells in the body, particularly in response to low oxygen levels. VEGF stimulates the growth of new blood vessels, which is essential for healing wounds and supporting the growth of tissues. In addition to its role in normal physiological processes, VEGF is also involved in various diseases. For instance, excessive VEGF production can contribute to the growth of tumors in cancer, as tumors require a blood supply to grow and spread. Understanding VEGF is important for developing targeted therapies in such conditions.