Figure 3. Cells migration under co-culturing with 5% O₂ condition during 2 days.

(A) Fluorescent images of cells migration. (B) The migration distance of CaSki cells and HUVECs in different chambers. Dashed line represents the cell positions at 0 h; the solid line represents the migration positions of cells in the corresponding time. Both two cells were labeled Dio fluorescent dye before cell seeding. Error bar was calculated by triplicate experiments.