both flattened and aggregated melanoma cells revealed the presence of a mr 120,000 surface-iodinated species with affinity for a matrix containing the hexapeptide ( glycylarginylglycylaspartylserylproline ) which includes the fibronectin cell attachment sequence , but only flattened cells showed significant exposure of a mr 140,000 iodinated component with affinity for a large cell attachment-promoting fibronectin polypeptide .
C0007634
cells
C0887869
cell attachment