Figure 2: Morphology of clear zone by paper disk diffusion. The disks which impregnated with 0.05, 0.1, 0.5 and 1 μg/mL of Chamaecyparis obtuse, Chrysanthemum boreale and Cryptomeria japonica extracts were placed on the inoculated agar. The inoculated plates were incubated at 37°C. The morphology was investigated under camera and a photograph taken. CO, Chamaecyparis obtuse; CB, Chrysanthemum boreale; CJ, Cryptomeria japonica.