Figure 4

Effect of L-carnitine on intracellular ROS levels after H ₂ O ₂ exposure in HL7702 cells. Cells were treated with or without L-carnitine prior to H₂O₂ challenge (300 μM, 12 h). ROS levels were measured using fluorescent probe DCFH-DA. Each value represents the mean of three replicates. ^#P < 0.01 vs. control; **P < 0.01 vs. H₂O₂ alone.