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Comparative results of sensitivity for LAMP-LFD and PCR. (A) Signal curve of real-time LAMP. (B) Agarose gel electrophoresis of T. gondii LAMP products. (C) Agarose gel electrophoresis of the T. gondii PCR products. (D) Visual inspection of LAMP-LFD. Lane M, DNA ladder marker; Numbers 1–8 represent 1 ng, 100 pg, 10 pg, 1 pg, 100 fg, 10 fg, 1 fg, 0.1 fg, 0.01 fg of T. gondii DNA, respectively; lane N, negative control.