Very Late Antigen Receptors (VLA) are cell surface proteins found on leukocytes, which play a significant role in regulating the immune response. However, these receptors are sometimes known by alternative terms such as Integrins or β1 Integrins. These synonymic terms refer to the same class of receptors, emphasizing their function as adhesion molecules that mediate cell-cell and cell-extracellular matrix interactions. Integrins are divided into various subtypes, including α and β chains, which can combine to form different heterodimeric receptors. These versatile receptors not only aid in immune responses but also contribute to processes like inflammation, tissue repair, and cell migration. In summary, Very Late Antigen Receptors (VLA) can also be referred to as Integrins or β1 Integrins.