GRADE & PURITYAnimal Free?Animal-free — produced without animal-derived components to reduce contamination risk. Use in biomanufacturing and culture avoiding animal-origin material.Carrier Free?Carrier-free — supplied without added carrier protein/stabilizer. Use when carriers (e.g. BSA) would interfere with conjugation or sensitive assays.Recombinant?Recombinant — produced via recombinant expression for defined sequence and consistency. Use for reproducible, animal-free proteins of known origin.Validated?Validated grade — performance confirmed in defined applications before release. Use when you want documented assurance the reagent works as stated.ExactAb™?ExactAb™ — Aladdin's antibody line emphasizing precision and validated quality. Use for reliable, specificity-validated antibody applications.Azide Free?Azide-free — without sodium azide preservative. Use in conjugations, cell work, or assays where azide is toxic or inhibitory.High Performance?High-performance grade with optimized purity and performance characteristics. Use for sensitive analyses where ordinary grades fall short.PBS Only?PBS-only formulation — supplied in phosphate-buffered saline with no other additives. Use when you need a clean PBS buffer free of stabilizers/carriers.≥95%(SDS-PAGE)See COA
Animal Free, Carrier Free, Recombinant, ExactAb™, Azide Free, Validated, High Performance, PBS Only, ≥95%(SDS-PAGE), See COA
Biochemical and Physiological Mechanisms
Integral membrane glycoprotein that plays an essential role in the immune response and serves multiple functions in responses against both external and internal offenses. In T-cells, functions primarily as a coreceptor for MHC class II molecule:peptide co
Store at -20°C,Avoid repeated freezing and thawing
Shipped In
Ice chest + Ice pads
Stability And Storage
Store at 2-8℃ short term (1-2 weeks). Store at -20℃ long term (24 months). Upon receipt, it is recommended to aliquot. Avoid freeze/thaw cycle.
Images
Recombinant CD4 Antibody (Ab219622) - Flow Cytometry Flow Cytometry analysis of C57BL/6 Mouse splenocytes labelling CD4 with Recombinant CD4 Antibody (Ab219622) (right panel) at 0.2 μg/mL for 1 hour at 4°C, compared with Rat IgG Isotype Control Antibody (Ab141774) (left panel) and detected with AF 647 - conjugated affinipure goat anti - Rat IgG.
Recombinant CD11b Antibody (Ab219622) - Flow Cytometry Flow Cytometry analysis of C57BL/6 Mouse splenocytes labelling CD4 (red) with Recombinant CD4 Antibody (Ab219622) at 0.2 μg/mL for 1 hour at 4°C and detected with AF 647 - conjugated affinipure goat anti-Rat IgG. Blue - Rat IgG Isotype Control Antibody (Ab141774). Black - Unlabelled control, cells without incubation with primary antibody.
Recombinant CD4 Antibody (Ab219622) - SEC The purity of Recombinant CD4 Antibody (Ab219622) is more than 95% verified by HPLC.
Application
Application
Dilution info
Flow Cytometry
≤0.5 µg per million cells in 100 µl volume
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
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