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Immunofluorescent Validation of orb1239976 in SARS-CoV-2 Infected Lung Tissue (Singh et al., Nature Microbiology, 2021). Multilabel confocal immunofluorescence microscopy of formalin-fixed paraffin-embedded lung sections from rhesus macaques infected with SARS-CoV-2. SARS-CoV-2 spike-specific antibodies, orb1239976 (k, n) (turquoise) , Ki67 (magenta) and neutrophil marker CD66abce (yellow) (k) , pan-macrophage marker CD68 (magenta) (n) and DAPI (blue). |
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Immunofluorescent Validation of orb1239976 in SARS-CoV-2 Infected Nose and Tonsil (Singh et al., Nature Microbiology, 2021). Multi-label confocal immunofluorescence microscopy of nasal epithelium (20X-b, 63xh) and tonsil (20X-c, 63X-i) from rhesus macaques infected with SARS-CoV-2 with SARS-CoV-2 spike-specific antibodies, orb1239976 (turquoise), DAPI (blue). Rabbit IgG isotype control antibody wasused to stain the tissues to rule out any non-specific staining (e, f). |
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Immunofluorescent Validation of orb1239976 in SARS-CoV-2 Infected Lung Tissue (Singh et al., Nature Microbiology, 2021). Multilabel confocal immunofluorescence microscopy of formalin-fixed paraffin-embedded lung sections from rhesus macaques infected with SARS-CoV-2. SARS-CoV-2 spike-specific antibodies, orb1239976 (turquoise) , Ki67 (magenta) and neutrophil marker CD66abce (yellow) (k-m) , pan-macrophage marker CD68 (magenta) (n-p) , HLA-DR (magenta) and pDC marker CD123 (yellow) (q-s) and DAPI (blue). |
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Immunohistochemistry Validation of SARS-CoV-2 (COVID-19) Spike in COVID-19 Patient Lung. Immunohistochemical analysis of paraffin-embedded COVID-19 patient lung tissue using anti-SARS-CoV-2 (COVID-19) Spike S2 antibody (orb1239976, 0.5 µg/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 C. A goat anti-rabbit IgG H&L (HRP) at 1/250 was used as secondary. Counter stained with Hematoxylin. Strong spike protein signal was observed in macrophages and airway epithelium of COVID-19 patient lung, but not in non-COVID-19 patient lung. |
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Immunohistochemistry Validation of SARS-CoV-2 (COVID-19) Spike in COVID-19 Patient Lung. Immunohistochemical analysis of paraffin-embedded COVID-19 patient lung tissue using anti-SARS-CoV-2 (COVID-19) Spike S2 antibody (orb1239976, 0.5 µg/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 C. A goat anti-rabbit IgG H&L (HRP) at 1/250 was used as secondary. Counter stained with Hematoxylin.Strong spike protein signal was observed in macrophages of COVID-19 patient lung. |
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IHC/IF Validation in COVID-19 Patient Sample. (Nuovo et al., 2020) Detection of SARS-CoV-2 proteins in nasopharyngeal swab cell preparations. B. An intense signal for covid-19 spike protein tested by SARS-CoV-2 spike antibodies (orb1239976) was observed in the glandular cells. F-H. Co-expression of spike detected by spike antibodies (orb1239976, 0.2 µg/mL) and envelope proteins detected by envelope antibodies (orb1239971, 2 µg/mL) of SARS-CoV-2 (F) documented localization of each protein to glandular cells (G, yellow). No signal was seen in oral swabs of positive cases (H). Both the spike and envelope protein detected by anti-spike antibodies (orb1239976) and anti-envelope antibodies (orb1239971) produced a signal in the nasopharyngeal swabs of the three cases and no signal was evident in the nasopharyngeal swabs of the seven controls. |
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IF Validation of SARS-CoV2 Spike in COVID-19 Patient Lung. (Magro et al., 2020) SARS-CoV2 spike protein (red, panel C) detected detected by anti-spike antibodies (orb1239976, 0.2 µg/mL) colocalized with C4d (green in panel d, merged in yellow). Spike protein (red, panel g) was also colocalized with C5b-9 (green in panel f&h, merged in yellow). |
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IF Validation of SARS-CoV2 Spike in C |
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