CD3 Antibody

Overview

CD3 antibody supplied as a ascites reagent for IHC-F, FACS in Human samples. This product is a monoclonal (mouse origin) antibody (host: Mouse; isotype: Mouse IgG1) intended for research use only.

Key elements and design rationale

• Antibody identity: Monoclonal (mouse origin); host Mouse; isotype Mouse IgG1; clone CA-3.
• Format and purification: format: Ascites; purity: Ascites.
• Species reactivity (reported): Human.
• Applications (listed): IHC-F, FACS.
• Immunogen / epitope context: Human thymocytes followed by Sezary T cells was used as the immunogen for this CD3 antibody..

These attributes help you align the antibody with the biological question (target state, sample type, and readout) while keeping interpretation grounded in appropriate controls.

Biological background

CD3 is the intended antigen for this primary antibody. Reported biological context includes: The alpha-beta heterodimeric T-cell antigen receptor binds antigen in association with major histocompatibility complex proteins on host cell surfaces. These 2 disulfide-linked glycoproteins, TCRA and TCRB are associated on T-cell surfaces with a complex of proteins called CD3(formerly T3).

Research relevance and current trends

• Spatial and single-cell approaches: imaging-based and cytometry workflows increasingly quantify heterogeneity and relocalization rather than only bulk abundance.
• Interaction-centric biology: IP-based enrichment and proteomics are widely used to define complexes, binding partners, and context-specific interactomes.

Common research applications

• IHC-F: commonly used to measure relative target levels or localization changes in the context of the experimental question.
• FACS: commonly used to measure relative target levels or localization changes in the context of the experimental question.

Across these readouts, differences in signal intensity, localization, or complex enrichment are typically interpreted alongside sample-matched controls and independent evidence to distinguish regulation from technical variation.

Notes for experimental interpretation

• Isoforms, cleavage products, or post-translational modifications can alter apparent molecular weight and subcellular distribution; interpret bands and staining patterns in the context of expected biology and sample preparation.
• Species differences and epitope conservation may affect binding; use matched positive controls and orthogonal evidence when comparing across organisms.
• Control concepts: include appropriate isotype and secondary-only controls (for imaging), and consider genetic perturbations (knockout/knockdown/overexpression) or independent antibodies targeting distinct epitopes to strengthen conclusions.

Epitope context is defined by the immunogen description; when available, align this with known domains, PTM sites, or family homology to anticipate potential cross-reactivity patterns. As a monoclonal antibody, binding is driven by a single epitope, which can support consistent recognition but may be sensitive to epitope masking by PTMs or conformational changes.

Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.