Anti-mouse CD49d monoclonal antibody reacts with 4 integrin, which helps to mediate cell-cell and cell-matrix interactions. 4 integrin combines with 1 and 7integrin to form VLA-4 and LPAM-1 (Peyers patch homing receptor) respectively. VLA-4 is expressed on most peripheral lymphocytes, thymocytes and monocytes. LPAM-1 is found on peripheral lymphocytes, but few thymocytes. Fibronectin and VCAM-1 act as ligands for both VLA-4 and LPAM-1. LPAM-1 also binds the mucosal vascular addressin MAdCAM-1. (1) Applications of this clone include flow cytometry, immunoprecipitation and immunohistochemistry. (1,2,3)