Fig. 4.
Rapidly proliferating HUVECs were grown to 70% confluence on poly-D-lysine–coated coverslips and incubated in culture medium with and without As2O3 for 24 hours.
(A) Control cells. (B) The photographs (original magnification 500 ×) show strongly increased TUNEL staining after treatment with 5 × 10−6 mol/L As2O3 in comparison with control cells.
