Figure 4.

Half lateral flow analysis of NeuNAcPHEA_x@AuNP_y particles. (A) Half lateral flow assay setup with target protein immobilized on the test line; (B) Effect of polymer chain length and particle size on lateral flow binding; (C) Signal:noise analysis; (D) Selectivity of NeuNAcPHEA₅₀@AuNP₃₅ against a panel of lectins (inset example LFD strips). (E) Selectivity of NeuNAcPHEA₅₀@AuNP₃₅ against S1 protein from different coronavirus strains. Data is the mean from 3 repeats. Original LFD strips are in the SI. Test lines are within the dashed-line box. 2,3′SL-BSA = 2,3′-sialyllactose-functionalized BSA.