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Table 1 Enrichment of nanobodies against NDV-NP protein from the phages during three rounds of panning

From: Nanobody-horseradish peroxidase fusion protein as an ultrasensitive probe to detect antibodies against Newcastle disease virus in the immunoassay

Round of panning Phage input (PFU/well) Phage output (PFU/well) Recovery rate Enrichment
1st round 5 × 1010 7 × 103 1.4 × 10−7 7
2nd round 5 × 1010 1.17 × 107 2.34 × 10−4 4.5 × 101
3rd round 5 × 1010 1.14 × 107 5 × 10−4 2.19 × 103