Fig. 6From: Development of a portable DNA extraction and cross-priming amplification (CPA) tool for rapid in-situ visual diagnosis of plant diseasesComparison of detection sensitivity among CPA and other assays. A serial dilution of P. infestans DNA ranging from 102 to 10–8 ng/μL was assayed by CPA (a), cPCR(b), nPCR (c), and qPCR (d). d Melting curve and amplification curve of each sample in qPCR. e Standard curve generated by Ct values derived from qPCR analysisBack to article page