Figure 3.

Cell proliferation in different groups. Histogram of the MTT assay shows that the proliferation rate of hydrogen and H₂O₂ was decreased compared with H₂O₂. With the extension of processing time, the H₂O₂ groups in the proliferating cells of the H₂O₂ and hydrogen group had no significant difference. (V represented H₂O₂ group, H represented H₂O₂ and hydrogen group, 1 represented 24 h, 2 represented 48 h and 3 represented 72 h).