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Table 1 Enrichment of specific phage particles against PEDV-S protein during three rounds of panning

From: A competitive ELISA based on nanobodies for the detection of serum neutralizing antibodies against porcine epidemic diarrhea virus

Round of panning

Input

(PFU/well)

P output

(PFU/well)

N output

(PFU/well)

Recovery

(P/input)

P/N

1st round

5 × 1010

3 × 102

7 × 102

6 × 10–9

0.42

2nd round

5 × 1010

1.1 × 106

5 × 103

2.2 × 10–5

2.2 × 102

3rd round

5 × 1010

1 × 107

1.2 × 104

2 × 10–4

8.3 × 102