Fig. 1.

Representative MALDI-TOF mass spectra of the mixed plasmids using the MS-based method. (a) primer; (b) 10⁰ copies/μl. In the mass spectra, the marker lines noted with DHAV-1, DHAV-3, DAstV-1, DAstV-2, DRV-1, DRV-2, TMUV, AIV, GPV, DEV, and β-actin represent the mass probe and the marker lines noted with T-DHAV-1, C-DHAV-3, C-DAstV-1, A-DAstV-2, C-DRV-1, G-DRV-2, G-TMUV, C-AIV, A-GPV, T-DEV, and A-β-actin represent the extended mass probe in Table 1, respectively. The x-axis (m/z) represents the mass (Daltons) of extension primer and the y-axis represents the intensity (Volts). The red arrow indicates the positive target. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article).