Adhesion of Eahy926 and A549 cells with Matrigel in vitro. (A) For adhesion test, extracellular matrix (Matrigel) was used. Representative images of Eahy926 and A549 cells adhered with the Matrigel after incubation for 1 h; (B) Number of adhesive cells with extracellular matrix (Matrigel) was measured by MTT assays. The difference in adhesion ability between Eahy926 and A549 cells was shown as OD value (OD: optical density). Independent experiments were measured in triplicate and repeated three times for each cell type; Columns, mean of independent experiments measured in triplicate and repeated for three independent times; bars, SD (P < 0.004).