Figure 4.

Effect of αC / βC / αC+βC on Proliferation of HESC Cells HESC Cells were Treated with Different Concentrations (1, 5, 10, 15 μM) of α-carotene (αC), β-carotene (βC), or α- plus β-carotene (αC+βC), respectively, for different periods of time (Days 1, 3, 5, 7, 9, 11) and cell numbers were determined at each time point. α-carotene alone, β-carotene alone, or α- plus β- carotene significantly inhibited the proliferation of HESC cells (P<0.005).