Figure 4

The numbers of LLC (Lewis Lung Cancer), human squamous cell carcinoma (SAS), and human pancreatic carcinoma-1 (PANC-1) cells penetrating the membrane at specific locations represented the biphasic pattern in the cell migration assay. The pictures show LLC, SAS and PANC-1 cells at 32 hours in each corresponding figure. All data represent the means ± standard error (S.E.) from duplicate experiments (n = 3 for each time point).