Fig. 3From: Diagnostic power of one-step and two-step RT-qPCR methods to SARS‑CoV‑2 detectionVisualization of RT-qPCR amplicon. Electrophoresis in agarose 1/5% gel of four positive clinical samples with positive and negative controls for the S (A) (245 bp) and N (284 bp) (B) primer sets. No band was created from the negative samples (C, D)Back to article page