SPSB2 Polyclonal Antibody

What it means: Polyclonal indicates this antibody is derived from multiple B cell clones, recognizing multiple epitopes on the target antigen.

Why it matters:

• High sensitivity — multiple epitope recognition amplifies signal, especially useful for low-abundance targets
• Tolerates minor conformational changes caused by fixation, denaturation, or post-translational modification

How to interpret here: This polyclonal antibody offers robust signal and broad-sample compatibility, ideal for initial target detection across diverse sample types and conditions.

What it means: This antibody was raised in Rabbit — the immune system of Rabbit was used to generate an antibody response against the SPSB2 antigen.

Why it matters:

• Host species determines your secondary antibody: you need an anti-Rabbit IgG secondary for indirect detection with this unconjugated primary
• Do not use this antibody if your sample contains endogenous Rabbit proteins (e.g. Rabbit-derived cells or tissue), as non-specific background will occur

How to interpret here: Select an anti-Rabbit secondary antibody conjugated to your preferred reporter (HRP, fluorophore, biotin). In dual-labeling experiments, confirm host species compatibility between all primary antibodies.

What it means: Species reactivity indicates the sample species in which this antibody has been experimentally validated: Human, Mouse, Rat.

Why it matters:

• Confirmed reactivity means the SPSB2 epitope is conserved in the listed species — you can expect specific signal without additional validation
• For species not listed, epitope conservation is unknown; pilot testing with appropriate positive and isotype controls is required before drawing conclusions

How to interpret here: If your sample is not from a listed species, compare the immunogen sequence to your target sequence homology before purchasing. Reactivity in unvalidated species is possible but must be empirically confirmed.

What it means: The conjugate for this antibody is Unconjugated — it is an unlabeled primary antibody — no detection molecule is attached.

Why it matters:

• Requires a compatible secondary antibody conjugated to HRP, fluorophore, or biotin for signal generation
• Maximum flexibility: choose your detection system, amplification method, and reporter label to match your assay

How to interpret here: Pair this unconjugated antibody with an anti-Rabbit IgG secondary conjugated to your preferred label. Ensure the secondary host targets Rabbit IgG specifically.

What it means: The isotype of this antibody is IgG — the antibody class defined by the constant region structure of its heavy chain, produced by Rabbit.

Why it matters:

• Isotype determines Fc receptor binding, complement activation capacity, and compatibility with protein A/G purification systems
• Critical for multiplex experiments: include a matched IgG isotype control to distinguish specific binding from non-specific Fc-mediated background

How to interpret here: Select an IgG-specific secondary antibody when using isotype-specific detection. Include an isotype control (IgG raised in Rabbit) at the same concentration as this antibody in every experiment.

What it means: This antibody has been experimentally validated for: Immunohistochemistry.

Why it matters:

• Validation confirms the antibody produces specific, reproducible signal in the listed assay formats — reducing the optimization burden for your research
• For unlisted applications, empirical testing with appropriate positive and negative controls is required; performance cannot be guaranteed without validation

How to interpret here: Consult the product datasheet for application-specific recommended dilution ranges and protocol notes. Begin optimization at the suggested starting dilution and adjust based on signal-to-noise in your specific sample type.

What it means: This antibody was purified by Antigen Affinity Purification — a method that selects antibodies based on specific binding affinity, removing non-specific immunoglobulins from the final preparation.

Why it matters:

• Antigen Affinity Purification removes background immunoglobulins, producing a higher-specificity reagent with reduced non-specific binding in most assay formats
• Higher purity improves quantitative reliability in densitometry, fluorescence intensity measurements, and comparative experiments

How to interpret here: Antigen Affinity Purification-purified antibodies can be used at the recommended dilution without additional purification steps. Standard blocking protocols remain important for samples with high endogenous Ig content or non-specific binding surfaces.