claim: cdna from recovered covid19 subjects inhibits spike protein binding to ace2 in a microsphere-based inhibition assay
evidence_1: next, we find that plasma from all 22/24 subjects with anti-trimer iggs inhibited ace2-trimer binding to a greater degree than controls, and that the degree of inhibition correlated with anti-trimer igg levels.", "this inhibition assay may be broadly useful to quantify the functional antibody response of recovered covid19 patients or vaccine recipients in a cell-free assay system.", "here we present microsphere-based flow cytometry assays that quantify both anti-spike iggs in plasma, and the ability of plasma to inhibit the binding of spike protein to angiotensin converting enzyme 2 (ace2)."
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  )