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Phase contrast images of ASM cells in the presence and absence of laminin-competing peptides (YIGSR, GRGDSP, GRADSP, 1 μM) following 7-day serum deprivation. YIGSR = peptide derived from the amino acid sequence of the β1 chain of the major receptor binding site in laminin; GRGDSP = amino acid sequence within fibronectin and other extracellular proteins that mediates cell attachment and also correspond to the α chain of laminin; GRADSP = inactive peptide for GRGDSP. Bar = 70 μm.
