Fig. 2
From: Selection and identification of an ssDNA aptamer against influenza B virus hemagglutinin protein
Magnetic bead-SELEX screening: Retention trends and PCR curve analysis. a Standard curve. b Retention rate of the ssDNA pool following each round of SELEX. c Fluorescence quantitative PCR curves from the eighth round of screening. d Fluorescence quantitative PCR curves from the ninth round of screening