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Isotype control apc

Manufactured by BD

Isotype control-APC is a laboratory reagent used in flow cytometry experiments to establish background staining levels. It serves as a negative control, allowing researchers to differentiate specific binding of antibodies from non-specific background signals.

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4 protocols using isotype control apc

1

Fibrocyte Identification in Peripheral Blood

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Peripheral blood fibrocytes were assayed within 24 hours of acquisition from the aforementioned patients and healthy controls. Peripheral blood fibrocytes were delineated according to expression of CD45, CD34 and type- I collagen, as previously described [30 (link), 44 (link)]. The following anti-human fluorochrome-conjugated mouse antibodies were added: CD45- PERCP (catalog #347464), CD34-APC (catalog #560940), isotype control-FITC (catalog #555748), isotype control-PercP (catalog #340762), and isotype control-APC (catalog # 555751) from BD Biosciences (San Jose, CA), Collagen type-I-FITC (catalog #FCMAB412) from Millipore (Temecula, CA).
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2

Detailed Immune Cell Phenotyping

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Cells were stained with the fluorochrome-conjugated monocolonal antibodies against CD4-FITC (BD Biosciences, 555346), CD25-PE (Biolegend, 302606), CD127-APC (Biolegend, 351315), HLA-ABC-PE (Biolegend, 311406), HLA-DR-FITC (Biolegend, 307604), isotype control-FITC (eBioscience, 11-4714), isotype control-PE (eBioscience, 12-4714), and isotype control-APC (BD Biosciences, 550854). After washing with phosphate-buffered saline (PBS), the cells were subsequently detected by flow cytometry using FC500MCL (Beckman Coulter) and data were calculated using FlowJo Software (Tree Star).
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3

BHK21 Cell Immunophenotyping Protocol

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Forty-two hours after transfection, BHK21 cells were harvested, washed with two to four volumes of staining buffer (1% BSA in PBS), and centrifuged (500 ×g, 5 min, 4°C). Five hundred thousand cells were resuspended in 80 μl of staining buffer and 20 μl of diluted antibodies added (5 μg per mL, 1 hour, 4°C). Cells were washed and incubated in 80 μl of staining buffer with 20 μl isotype-APC control (BD cat #555751) or 20 μl anti-Human IgG-APC (BD cat #550931) for 30–45 minutes at 4°C. Cells were washed and fixed with 250 μl of BD Cytofix Buffer (Cat #554655) for 30 minutes at 4°C, and were analyzed on a BD LSRFortessa flow cytometer.
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4

Surface Expression of VRC-A gp145 in 293i Cells

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For the surface expression of VRC-A gp145, 293i cells were transfected
with pHV130770 plasmids using ExpiFectamine™ 293 Transfection Kits (Life
Technologies Cat. # A14525) following the manufactures’
protocol. The cells were washed with four volumes of room-temperature
phosphate-buffered saline (DPBS) (Life Technologies Cat # 10010-023),
and centrifuged (500g for 5 minutes). 106 cells were resuspended in
80 µL of staining buffer (1% BSA in DPBS) to which were added 20
µL of diluted antibodies (1 ug per reaction). After incubation (1 hour
at 4°C) with shaking, cells were washed and centrifuged (500 X g). Cells
were incubated with either 20 µL isotype-APC control (BD cat
#555751) or 20 µL anti-Human IgG-APC (BD cat #550931)
for 30–45 minutes at 4°C, protected from light. After washing
and fixation, cells were analyzed by flow cytometer (BD LSRFortessa).
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