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a. Binding of the 5 anti-TMPRSS2 VHH on recombinant TMPRSS2 measured by BLI. b, c. Comparison of one commercial TMPRSS2 antibody and of the dimeric anti-TMPRSS2 VHH A01-Fc. 293T cells were transfected with WT TMPRSS2. 24 h later, cells were analysed by flow-cytometry. Staining with the commercial antibody was performed on fixed cells (b) while surface staining with the VHH was performed on live cells (c).
