Fig. 1: Selection of I223R/H275Y NA-specific monoclonal antibody.

a Screening for the specificity of monoclonal phages from third round of panning by ELISA. Each experiment was repeated two times independently with similar results. b Amino acid sequence of A4. c SDS-PAGE of purified A4 under nonreducing (NR) and reducing (R) conditions. Each experiment was repeated three times independently with similar results. Lane M: protein marker; HC: heavy chain, LC: light chain.