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Table 1 Enrichment of positive phage clones by subtraction biopanning

From: Screening and selection of peptides specific for esophageal cancer cells from a phage display peptide library

Rounds Input phage (pfu) Output phage (pfu) Recovery
1 2.0 × 1011 4.2 × 103 2.1 × 10-8
2 2.0 × 1011 2.5 × 105 1.25 × 10-6
3 2.0 × 1011 6.8 × 106 3.4 × 10-5
  1. Pfu: plaque forming unit.