Figure 2.

(a) Intracellular reactive oxygen species (ROS) in breast cells treated for 24 h with HT or TY; (b) Increase of the cellular ROS level after an oxidative burn with H₂O₂; (c) Intracellular ROS in breast cells treated for 24 h with HT or TY followed by an oxidative burst with H₂O₂. Inhibitory effects of HT and TY are shown as percent inhibition of untreated or H₂O₂-stimulated fluorescence and represented as the mean ± SEM of three independent replicates carried out in triplicate. ^† MCF7; ^‡ MDA-MB-231; * MCF10A indicates significant differences.