Indicate true (T) and false (F) statements below regarding fibronectin in the extracellular matrix. Your answer would be a four-letter string composed of letters T and F only, e.g. TFTT.
( ) Fibronectin carries asparagine-linked oligosaccharides.
( ) Fibronectin often forms homodimers by cross-linking through covalent attachment of lysine residues.
( ) Fibronectin binds to integrins, collagens, and glycosaminoglycans through its type III repeats.
( ) Fibronectin molecules can assemble into fibrils only in the vicinity of cells.