Figure 2.

Effects of PGE₁ on cell viability. (A) HUVECs were co-incubated with H₂O₂ and PGE₁ for 24 h, and then cell viability was evaluated by MTT analysis. (B) HUVECs were pre-incubated with H₂O₂ for 1 h and then exposed to PGE₁ for 24 h. The viability of cells was evaluated by MTT analysis. Values are expressed as mean±SD. n=6. ^cP<0.01 vs control group; ^eP<0.05, ^fP<0.01 vs the H₂O₂-alone group.