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3 protocols using pe conjugated anti human cd8

1

Biomarkers for HIV-1 Infection Assessment

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Patient blood samples were drawn after a 12-h fast within 3 days of admitted to hospital. The serum sodium concentration was assayed with a biochemical autoanalyzer (Beckman Coulter, CA, USA) using an ion-selective electrode method. The numbers of CD4+ and CD8+ T cells were measured by flow cytometry (B&D Science, NJ, USA) following staining with FITC-conjugated anti-human CD4, PE-conjugated anti-human CD8, and PE-Cy5 conjugated anti-human CD3 mAbs (B&D Sciences, NJ, USA). HIV-1 RNA was assayed according to the standard protocol of the COBAS Amplicor HIV-1 Monitor Test kit (Roche, IN, USA) on the COBAS Amplicor PCR system (version 1.5) (Roche, IN, USA).
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2

Immunophenotyping of Humanized Mice

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Blood, spleen, and BM cells from hu-mice were stained with antibodies and analyzed using a BD Accuri C6 Plus (BD Biosciences). The antibodies used to detect human cells included APC-conjugated anti-human CD45 (555485, BD PharmingenTM), FITC-conjugated anti-mouse CD45 (553080, BD PharmingenTM), APC-conjugated anti-human CD4 (555349, BD PharmingenTM), PE-conjugated anti-human CD8 (555367, BD PharmingenTM), PE-conjugated anti-human CD19 (302208, BioLegend), and PE-conjugated anti-human CD33 (303403, BioLegend). For immunocy-tochemistry, anti-CD45 (ab8216, Abcam) and anti-CD34 (MAB72271, R&D Systems) antibodies were used, and proper isotype-matched IgG antibodies were used to detect the primary signals. Flow cytometric data were analyzed using the CSamplerTM Plus software program (BD Bio-sciences).
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3

Phenotypic Analysis of Immune Cell Infiltration

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The frozen blocks were sectioned (8-μm-thick) for immunostaining. PEconjugated anti-human CD3, PE-conjugated anti-human CD8, and FITC-conjugated anti-human CD4 antibodies (all from BD Biosciences) were applied overnight at 4°C. The slides were washed and stained with DAPI to evaluate the nuclei. The slides were observed by fluorescence microscopy. To quantify tissue infiltration of CD4 or CD8 T cells, the number of markerpositive cells for each subset within the cross-section of the tissues was measured using Image J 1.50i software. To stain live HUVECs in the gel tissues, paraffin blocks were sectioned (5-μmthick) and incubated with FITC-conjugated ULEX (Vector Lab., Inc.) overnight at 4°C. The slides were washed and stained with DAPI (Thermo Fisher Scientific) to evaluate the nuclei. The slides were observed by fluorescence microscopy.
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