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Figure 3 SARS-CoV-2 Omicron Variant Spike Antibodies Specifically Detect Omicron Variant Spike S1 Protein in an ELISA Coating Antigen: SARS-CoV-2 spike S1 proteins of WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529), 1 &956,g/mL, incubated at 4 &730,C overnight.Detection Antibodies: SARS-CoV-2 Omicron Variant Spike antibody, 9793, dilution: 200 and 1000 ng/mL, incubated at RT for 1 hr.Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubated at RT for 1 hr. |
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Figure 5 ELISA Validation of Omicron Variant Spike S1 Antibodies with SARS-CoV-2 Omicron Variant Spike S1 Protein Coating Antigen: SARS-CoV-2 spike S1 proteins, WT and Omicron variant, 1 &956,g/mL, incubated at 4 &730,C overnight.Detection Antibodies: SARS-CoV-2 Omicron spike antibody, 9793, dilution: 0.3-1000 ng/mL, incubated at RT for 1 hr.Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubated at RT for 1 hr.SARS-CoV-2 Omicron spike antibody specifically detects spike S1 protein of Omicron variant (95-129), but not WT (10-300). |
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Figure 2 Immunofluorescence Validation of Omicron Variant Spike Specific Antibody on a Nasal Swab Sample from a Patient Infected with the Omicron Variant. Immunofluorescent analysis of 4% paraformaldehyde-fixed patient nasal swab sample labeling spike with 9793 and nucleocapsid with 35-722 at 10 &956,g/mL for each, followed by goat anti-rabbit IgG secondary antibody at 1/500 dilution for spike (9793,green) and goat anti-mouse IgG secondary antibody at 1/500 dilution for nucleocapsid (35-722, red) with DAPI counter staining (blue). |
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Figure 1 Immunohistochemistry Validation of Omicron Variant Spike Specific Antibody on a Nasal Swab Sample from a Omicron COVID-19 Patient. Immunohistochemical analysis of 4% paraformaldehyde-fixed cells from a nasal swab from a patient infected with the Omicron variant stained with Omicron specific antibody (9793) at 1 &956,g/ml. Tissue was fixed with formaldehyde and blocked with 10% serum for 1 h at RT, antigen retrieval was by heat mediation with a citrate buffer (pH6). Samples were incubated with primary antibody overnight at 4&730,C. A goat anti-rabbit IgG H&L (HRP) at 1/250 was used as secondary. Counter stained with Hematoxylin. |
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Figure 4 WB Validation of of Omicron Variant Spike Antibodies with SARS-CoV-2 Omicron Variant Spike S1 Protein Loading: 30 ng of SARS-CoV-2 spike S1 proteins, including WT, Delta variant (B.1.617.2) and Omicron variant (B.1.1.529).Detection Antibodies: SARS-CoV-2 Omicron Variant Spike antibody, 9793, 2 &956,g/mL, incubated at RT for 1 hr.Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubated at RT for 1 hr.SARS-CoV-2 Omicron Variant Spike antibody (9793) specifically detects Omicron variant spike S1 protein (95-129), but not spike S1 protein of WT (10-300) and Delta (95-127). |
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Figure 6 WB Validation of of Omicron Variant Spike Antibodies with SARS-CoV-2 Variant Spike S1 Proteins Loading: 30 ng of SARS-CoV-2 spike S1 proteins, including WT, alpha variant (B.1.1.7), beta variant (B.1.351), gamma variant (P.1), delta variant (B.1.617.2), and omicron variant (B.1.1.529),Detection Antibodies: SARS-CoV-2 Omicron Variant Spike antibody, 9793, 2 &956,g/mL, incubated at RT for 1 hr.Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubated at RT for 1 hr.SARS-CoV-2 Omicron Variant Spike antibody (9793) specifically detects Omicron variant spike S1 protein (95-129), but not spike S1 protein of WT (10-300) and all other variants. |