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Mechanism of AuNP-based biosensor based on UP-APCR for rapid detection of P. infestans. A region of P. infestans-specific repetitive DNA sequence was amplified to generate large amounts of ssDNA using APCR. The ssDNA was then applied to the lateral flow biosensor, giving a characteristic red band when there is AuNPs accumulation. Reprinted from [36] with permission from Elsevier.
