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Secondary goat anti human igg ap antibodies

Manufactured by Southern Biotech

Secondary goat anti-human IgG-AP antibodies are used to detect the presence of human immunoglobulin G (IgG) in various laboratory applications. The antibodies are conjugated with alkaline phosphatase (AP) enzyme, which allows for colorimetric or chemiluminescent detection of target IgG.

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2 protocols using secondary goat anti human igg ap antibodies

1

Quantifying Anti-Salmonella Antibodies by ELISA

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These experiments were performed as previously described (25 (link)). Briefly, enzyme-linked immunosorbent assay (ELISA) plates (Nunc-Immuno) were coated overnight with 100 μl of carbonate-bicarbonate buffer (Sigma-Aldrich) per well containing 7.5 μg/ml S. Typhimurium LPS antigen (Alexis Biochemicals). Plates were washed with PBS containing 0.05% Tween 20 and blocked with 200 μl/well blocking buffer (PBS–1% bovine serum albumin [BSA]) for 1 h at 37°C. Test serum prepared at 1:20 in dilution buffer (PBS–0.05% Tween 20–1% BSA) was serially diluted 3-fold and incubated at 37°C for 1 h. After washing, 100 μl of 1:2,000 secondary goat anti-human IgG-AP antibodies (Southern Biotech) was added and incubated for 1 h at 37°C. Finally, after washing, 100 μl of SigmaFAST p-nitrophenyl phosphate substrate was added to each plate and the plate was read after 30 min using a BioTek ELx800 reader (BioTek Instruments, USA) at 405 nm.
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2

Measurement of Antigen-Specific Antibodies

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Enzyme-linked immunosorbent assay plates (Nunc-Immuno) were coated overnight using 100 µL of carbonate-bicarbonate buffer (Sigma Aldrich) per well containing the following antigens adjusted to 5 µg/mL: STm-LPS (Alexis Biochemicals), STm–outer membrane protein (OMP) and STm-flagellar protein (FliC) (kind gift from Adam Cunningham and Ian Henderson [17 (link)]), and Escherichia coli–LPS 0127:B8 (Sigma Aldrich). Plates were washed with wash buffer (PBS plus 0.05% Tween 20) and blocked with 200 µL of blocking buffer (PBS plus 1% BSA) per well for 1 hour at 37°C. Test serum at 1:20 in dilution buffer (PBS plus 0.05% Tween 20 plus 1% BSA) was serially diluted 3-fold and incubated at 37°C for 1 hour. After washing, 100 µL of 1:2000 secondary goat anti-human IgG-AP antibodies (Southern Biotech) were added and incubated for 1 hour at 37°C. Finally, after washing, 100 µL of SigmaFast p-nitrophenyl phosphate substrate was added to each plate and read after 30 minutes with a Bio Tek reader ELx800 (Bio Tek Instruments) at 405 nm.
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