Fig. 4.
LFA-based sensors for detection of SARS-CoV-2 S protein: (A) Working principle of nanozyme-based LFA sensor for detection of SARS-CoV-2 S protein [142]; (B) Schematic of ACE2 receptor and antibody co-fabricated LFA for detection of SARS-CoV-2 S protein [143]; (C) Molecular structure of glycan capture units, the formation of glyconanoparticles, and the design concept of glyconanoparticles-based LFA [144].