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Table 1 Enrichment performance of the three different methods after spiking 100 SW620 cells in 5 mL peripheral blood (all assays were repeated 3 times).

From: Negative enrichment by immunomagnetic nanobeads for unbiased characterization of circulating tumor cells from peripheral blood of cancer patients

Method Total number of leukocytes Recovery Purity
  Before enrichment After enrichment Average (%) Range (%) Average (%)
CD45 depletion 3 × 107 6.0 × 103 58 50-66 0.97%
Positive enrichment 3 × 107 2.0 × 103 25 24-26 1.25%
CD45 depletion + positive enrichment 3 × 107 1.5 × 103 22.5 20-25 1.50%