CD4 Antibody

About the Target

CD4 is a 55-60 kDa monomeric glycoprotein and a member of the immunoglobulin supergene family, serving as a co-receptor in MHC class II-restricted T-cell activation. It is expressed in approximately 60% of peripheral blood T lymphocytes. It is critical for immune function, facilitating adhesion and enhancing TCR/CD3 signalling during T cell activation by binding to MHC class II antigens on antigen-presenting cells (APCs). Depending on the literature source, CD4 may also be discussed as T-cell surface glycoprotein CD4 and T-cell surface antigen T4/Leu-3.

Reported cellular context includes cell membrane and membrane, which can matter when signal is compared across treatments or changing cell states. Following CD4 across matched perturbations can help separate abundance effects from shifts in localization, complex assembly, or pathway state.

Research Context

CD4 is commonly interpreted in the context of immunology research, and readouts are often stronger when a study separates expression changes from compartment-level redistribution. When reported signal spans cell membrane and membrane, a defined reference condition can make comparisons more interpretable across perturbations, passages, or replicate sets.

Consider these angles when interpreting target-level changes:

• apparent redistribution between cell membrane and membrane across matched conditions
• context differences tied to immune-cell state, activation, or lineage composition
• co-patterning with orthogonal markers and control conditions that clarify pathway state
• time-matched comparisons so changes reflect biology rather than handling or sampling drift

Variant Considerations

If your project spans exploratory questions, the regular version offers a balanced option for establishing baseline signal behavior for CD4. This can help when protocols evolve over time and the goal is to compare experiments using a stable reference workflow.

Standardize sampling time, control choice, and downstream analysis thresholds so apparent differences in CD4 reflect biology rather than handling. When interpreting CD4, it is often useful to decide early whether the main question is overall abundance, compartmental enrichment, or context-dependent redistribution.

For multi-run studies, a shared reference condition can keep CD4 trends easier to compare across datasets. That kind of consistency is especially helpful when follow-up work expands to new perturbations, model systems, or longitudinal collections.