Fig. 4. End-point dilution assay with Tomato spotted wilt virus (TSWV)- rapid Immune-gold strip (RIGS) kit for detection limitation of viral concentrations. A series of diluted TSWV-infected samples were prepared from initial sap of tomato and tobacco leaves (0.1 g/ml, leaf weight/extraction buffer volume). Dilution ratio was indicated on the
top of photograph. End-point dilution for TSWV detection using TSWV-RIGS kit was indicated (red).