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Dot-ELISA test (PVDF membrane) results of suspected rice plants from Yunnan province. 1(-): Sample I from Menghai. 2(-): Sample II from Menghai. 3(-): Sample III from Menghai. 4(-): Sample IV from Menghai. 5(+): Sample from Shidian. 6(-): Sample I from Lincang. 7(+): Sample II from Lincang. 8(+): Sample from Chuxiong. 9(+): Positive control. 10(-): Negative control.
