Figure 5
From: The impact of CdSe/ZnS Quantum Dots in cells of Medicago sativa in suspension culture
Cell suspension culture controls for the DAB assay. (A) Without treatment. (B) Treated with DAB (negative control). (C) Heat-treated (45°C for 20 minutes) to induce the production of H2O2 (positive control). (D) Treated with 10 mM H2O2 and DAB to visualize the peroxidase activity. All experiments were visualized 1 hour and half after the addition of DAB, in bright field. Scale bar = 50 μM.