Fig. 1. (a) Schematic diagram of the split G-quadruplex enhanced fluorescence assay for DNA detection. S represents the target strand. Gx and Gy represent the G segments that are linked to the binding region. x and y represent the number of the guanine base. (b) Ratio of signal to background for the six different split modes in the split G-quadruplex enhanced fluorescence assay. The data were gained from three independent experiments.
