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 and stimulates the growth of new blood vessels from existing ones, which is essential for healing and development. VEGF is particularly important in conditions where blood supply is needed, such as during wound healing or in tumors that require nutrients. Abnormal levels of VEGF can lead to diseases, including cancer and diabetic retinopathy, making it a target for therapeutic interventions.