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. 2017 Jan 25;13:34. doi: 10.1186/s12917-016-0940-0

Fig. 1.

Fig. 1

Optimization of primer concentration for N-gene based RT-LAMP assay. Curve A indicate amplification at optimized primers concentration while B indicate amplification efficiency at half of that primer concentration at which the increase in amplification signal per minute did not exceed threshold value of 30 mVolt/min. Negative control is indicated by a magenta colored line labeled as C