Figure 4:UPGMA clustering analysis using DGGE band patterns after exposure to silver nanoparticles (AgNPs) and control (with no AgNP), where L, M and H before AgNP represents 25, 100 and 200 mg/L concentrations, respectively. Numbers at the end of the descriptors (1, 2, 3) indicate the replicate samples. Band groups a1-a6 represent highlighted differences in banding pattern between controls and AgNP treatments.