FN1 and neoplasm: In cell adhesion studies, the 34-mer peptide inhibited tumor cell attachment to a variety of extracellular matrix (ECM) proteins, some of which serve as basement membrane and cellular anchor constituents such as fibronectin (FBN), vitronectin (Vn), collagen (Col), thrombospondin (TBS), fibrinogen (FN), and laminin (LAM) [22,34].