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![ELISA: SARS-CoV-2 Spike Antibody [NBP3-11940] - Validation of SARS-Cov-2 Spike Antibody with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins 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 ug/mL, incubated at 4C overnight. Detection Antibody: SARS-CoV-2 Spike antibody NBP3-11940, 0.2-1 ug/mL incubated at RT for 1 hr. Secondary Antibody: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. NBP3-11940 can detect spike S1 protein for all variants except omicron.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-ELISA-NBP3-11940-img0009.jpg "ELISA: SARS-CoV-2 Spike Antibody [NBP3-11940] - Validation of SARS-Cov-2 Spike Antibody with Spike S1 Protein of SARS-CoV-2 Variants. Coating Antigen: SARS-CoV-2 spike S1 proteins 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 ug/mL, incubated at 4C overnight. Detection Antibody: SARS-CoV-2 Spike antibody NBP3-11940, 0.2-1 ug/mL incubated at RT for 1 hr. Secondary Antibody: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. NBP3-11940 can detect spike S1 protein for all variants except omicron.")
![Western Blot: SARS-CoV-2 Spike Antibody [NBP3-11940] - Western Blot Validation with SARS-CoV-2 (COVID-19) Spike S1 Recombinant Protein. Loading: 50 ng per lane of SARS-CoV-2 (COVID-19) Spike S1 recombinant protein. Antibodies: SARS-CoV-2 Spike, NBP3-11940, 1h incubation at RT in 5% NFDM/TBST. Secondary: Goat anti-rabbit IgG HRP conjugate at 1:10000 dilution. Lane 1: 1 ug/mL and Lane 2: 2 ug/mL.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-Western-Blot-NBP3-11940-img0008.jpg)
![Immunocytochemistry/Immunofluorescence: SARS-CoV-2 Spike Antibody [NBP3-11940] - Immunofluorescence Validation of SARS-CoV-2 (COVID-19) Spike (cleavage site) in 293 Transfected Cells. Immunofluorescent analysis of 4% paraformaldehyde-fixed Spike transfected 293cells labeling SARS-CoV-2 (COVID-19) Spike (cleavage site) with NBP3-11940 at 10 mg/mL, followed by goat anti-rabbit IgG secondary antibody at 1/500 dilution (green) and DAPI staining (blue).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-Immunocytochemistry-Immunofluorescence-NBP3-11940-img0005.jpg)
![Western Blot: SARS-CoV-2 Spike Antibody [NBP3-11940] - Overexpression Validation in Spike Transfected 293 Cells. Loading: 10 ug per lane of 293 cell lysate. Antibodies: SARS-CoV-2 Spike, NBP3-11940 (0.5 ug/mL), 1h incubation at RT in 5% NFDM/TBST. Secondary: Goat anti-rabbit IgG HRP conjugate at 1:10000 dilution. Lane 1: WT 293 cells and Lane 2: SARS-CoV-2 Spike overexpressed 293 cells](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-Western-Blot-NBP3-11940-img0006.jpg)
![Western Blot: SARS-CoV-2 Spike Antibody [NBP3-11940] - Western Blot Validation with SARS-CoV-2 (COVID-19) Spike Recombinant Protein. Loading: 30 ng per lane of SARS-CoV-2 (COVID-19) Spike RBD+SD1+SD2 recombinant protein. Antibodies: SARS-CoV-2 Spike, NBP3-11940, 1h incubation at RT in 5% NFDM/TBST. Secondary: Goat anti-rabbit IgG HRP conjugate at 1:10000 dilution. Lane 1: 1 ug/mL, Lane 2: 2 ug/mL and Lane 3: 4 ug/mL.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-Western-Blot-NBP3-11940-img0007.jpg)
![ELISA: SARS-CoV-2 Spike Antibody [NBP3-11940] - Detection of SARS-CoV-2 UK Variant Spike S1 Protein with Spike S1 Antibodies by Direct ELISA. Coating Antigen: SARS-CoV-2 spike S1 proteins, including WT and UK variant (B.1.1.7), 1 ug/mL Incubate at 4C overnight. Detection Antibodies: SARS-CoV-2 Spike Antibody, NBP3-11940, dilution: 0.1-1000 ng/mL, incubate at RT for 1 hr. Secondary Antibodies: Goat anti-rabbit HRP at 1:20,000, incubate at RT for 1 hr. Immunogen region of antibody NBP3-11940 includes site 681P that was mutated in B.1.1.7.. SARS-CoV-2 Spike antibody (NBP3-11940) has lower binding affinity for variant S1 protein as compared to WT S1 protein.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-ELISA-NBP3-11940-img0001.jpg)
![ELISA: SARS-CoV-2 Spike Antibody [NBP3-11940] - ELISA Validation of SARS-CoV-2 Spike Antibody Pair. A sandwich ELISA was performed using the anti-SARS-CoV-2 Spike antibodies NBP3-11940 (10 ug/mL ) as the capture antibody. Biotin-labled anti-SARS-COV-2 Spike S1 antibodies (1 ug/mL ) and streptavidin-HRP (0.1 ug/mL ) were used for detection. Detection range is from 0.8 ng to 200 ng (SARS-CoV-2 Spike S1 Protein).](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-ELISA-NBP3-11940-img0002.jpg)
![ELISA: SARS-CoV-2 Spike Antibody [NBP3-11940] - ELISA Validation with SARS-CoV-2 (COVID-19) Spike Recombinant Protein. Antibodies: SARS-CoV-2 Spike, NBP3-11940. A direct ELISA was performed using SARS-CoV-2 (COVID-19) Spike RBD+SD1+SD2 recombinant protein, as coating antigen and the anti-SARS-CoV-2 Spike as the capture antibody. Secondary: Goat anti-rabbit IgG HRP conjugate at 1:20000 dilution. Detection range is from 8 ng/mL to 1000ng/mL.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-ELISA-NBP3-11940-img0003.jpg)
![ELISA: SARS-CoV-2 Spike Antibody [NBP3-11940] - ELISA Validation with SARS-CoV-2 (COVID-19) Spike S1 Recombinant Protein. Antibodies: SARS-CoV-2 Spike antibody, NBP3-11940 (1 ug/mL). A direct ELISA was performed using SARS-CoV-2 (COVID-19) Spike S1 recombinant protein as coating antigen and the anti-SARS-CoV-2 Spike antibody as the capture antibody. Secondary: Goat anti-rabbit IgG HRP conjugate at 1:20000 dilution. Detection range is from 0.3 ng/mL to 1000ng/mL.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-ELISA-NBP3-11940-img0004.jpg)
![ELISA: SARS-CoV-2 Spike Antibody (CR3022) [NBP2-90980] - Binding curve of SARS-CoV-2 Spike Antibody (CR3022) to SARS-CoV-2 Spike Glycoprotein domains S1 and S2 of various origin. ELISA plate coated with SARS-CoV-2 Spike Glycoprotein (S1), His-Tag (Insect Cells; grey line), SARS-CoV-2 Spike Glycoprotein (S2), His-Tag (Insect Cells; yellow line) and SARS Coronavirus Spike Glycoprotein (S1), His-Tag (HEK293 cells; blue line) (Native Antigen) at concentrations of 5 ug/ml. A 3-fold serial dilution from 41.6 ng/ml was performed using SARS-CoV-2 Spike Antibody (CR3022). For detection, a 1:4000 dilution of HRP-labelled anti-human IgG antibody was used.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-CR3022-ELISA-NBP2-90980-img0001.jpg "ELISA: SARS-CoV-2 Spike Antibody (CR3022) [NBP2-90980] - Binding curve of SARS-CoV-2 Spike Antibody (CR3022) to SARS-CoV-2 Spike Glycoprotein domains S1 and S2 of various origin. ELISA plate coated with SARS-CoV-2 Spike Glycoprotein (S1), His-Tag (Insect Cells; grey line), SARS-CoV-2 Spike Glycoprotein (S2), His-Tag (Insect Cells; yellow line) and SARS Coronavirus Spike Glycoprotein (S1), His-Tag (HEK293 cells; blue line) (Native Antigen) at concentrations of 5 ug/ml. A 3-fold serial dilution from 41.6 ng/ml was performed using SARS-CoV-2 Spike Antibody (CR3022). For detection, a 1:4000 dilution of HRP-labelled anti-human IgG antibody was used.")
![ELISA: SARS-CoV-2 Spike Antibody (CR3022) [NBP2-90980] - Binding curve of SARS-CoV-2 Spike Antibody (CR3022) to SARS-CoV-2 Spike Glycoprotein (S1), Sheep Fc-Tag and SARS-CoV-2 Spike Glycoprotein (S2), Sheep Fc-Tag from HEK293 cells. ELISA plate coated with SARS-CoV-2 Spike Glycoprotein (S1), Sheep Fc-Tag (blue line) or SARS-CoV-2 Spike Glycoprotein (S2), Sheep Fc-Tag (orange line) from HEK293 cells (Native Antigen) at concentrations of 5 ug/ml. A 3-fold serial dilution from 125 ng/ml was performed using SARS-CoV-2 Spike Antibody (CR3022). For detection, a 1:4000 dilution of HRP-labelled anti-human IgG antibody was used.](http://images.novusbio.com/fullsize/SARS-CoV-2-Spike-Antibody-CR3022-ELISA-NBP2-90980-img0002.jpg)
