APC anti-human CD4 Antibody

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 ?l per million cells in 100 ?l staining volume or 5 ?l per 100 ?l of whole blood.

The OKT4 antibody binds to the D3 domain of CD4 and does not block HIV binding.　Additional reported applications (for the relevant formats) include: immunohistochemistry of frozen sections and blocking of T cell activation. This clone was tested in-house and does not work on formalin fixed paraffin-embedded (FFPE) tissue. The Ultra-LEAF? purified antibody (Endotoxin < 0.01 EU/?g, Azide-Free, 0.2 ?m filtered) is recommended for functional assays (Cat. No. 317453 and 317454).

In a small subset of individuals, the OKT4 clone does not bind to CD4 due to polymorphisms in CD4.⁹

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T cell subset, majority of thymocytes, monocytes/macrophages

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