Figure 6From: The impact of CdSe/ZnS Quantum Dots in cells of Medicago sativa in suspension cultureDAB assay for H 2 O 2 detection. (A, B) Cell suspension culture treated with 100 nM of QDs plus DAB. (C,D) Cell suspension culture treated only with DAB. The orange/brownish precipitates around cells are QDs and not due to the DAB polymerization as revealed by UV light excitation. Scale bar = 50 μM.Back to article page