Lane 1: SARS-CoV-2 N protein(Cat# bs-41408P) at 50ng; Lane 2: SARS-CoV-2 N protein(Cat# bs-41408P) at 25ng; Lane 3: SARS-CoV-2 N protein(Cat# bs-41408P) at 5ng; Lane 4: SARS-CoV-2 N protein(Cat# bs-41408P) at 2ng ; Lane 5: SARS-CoV-2 N protein(Cat# bs-41408P) at 1ng;Lane 6: SARS-CoV-2 N protein(Cat# bs-41408P) at 0.5ng probed with SARS-CoV-2 N protein monoclonal Antibody, Unconjugated (bsm-41412M) at 1:1000 dilution and 4˚C overnight incubation. Followed by conjugated secondary antibody incubation at 1:20000 for 60 min at 37˚C.