we used three assay systems , hfk adhesion to purified extracellular matrix ( ecm ) ligands and endogenous secreted ecm , localization of integrins in focal adhesions ( fas ) , and inhibition of hfk adhesion with mabs to conclude : ( a ) a new anti-alpha 3 beta 1 mab , p1f2 , localized alpha 3 beta 1 in fas on purified laminin greater than fibronectin/collagen , indicating that laminin was the best exogeneous ligand for alpha 3 beta 1 .
C0015350
ecm
C0022984
laminin