Anti-Cre Recombinase antibody (STJ140003)

What it means: Polyclonal antibodies are produced by multiple B-cell clones, each recognizing a distinct epitope on the target protein — giving Polyclonal antibodies a broad epitope coverage.

Why it matters:

• Polyclonal antibodies typically deliver stronger signal in Western blot and IHC because multiple epitopes remain accessible even after SDS denaturation or fixation, reducing the risk of a false-negative result.
• Greater tolerance for antigen sequence variation across species makes Polyclonal reagents well-suited for studies that span human, mouse, and rat samples in the same experiment.

How to interpret here: Expect robust, high-sensitivity detection with this Polyclonal antibody. Because multiple clones contribute to the signal, titrate carefully — the optimal concentration may be lower than expected. Lot-to-lot variation is possible; validate each lot against a known-positive control.

What it means: This antibody was raised in Goat, producing Goat-derived IgG antibodies with species-specific secondary antibody compatibility.

Why it matters:

• The Goat host species determines which secondary antibody you need for indirect detection — select an anti-Goat IgG secondary matched to your detection label (HRP, fluorochrome, or biotin).
• Use secondaries specifically validated for Goat IgG. Verify cross-adsorption status if your sample matrix contains endogenous Goat immunoglobulins.

How to interpret here: Confirm availability of an anti-Goat secondary antibody in your lab before ordering. For multiplex IF, pair this Goat-raised antibody with antibodies from a different host species to avoid secondary antibody cross-reactivity.

What it means: This antibody has validated reactivity to Bacteriophage P1 antigen, confirming it binds the Bacteriophage P1 ortholog of the target protein in immunoassay conditions.

Why it matters:

• Reactivity to Bacteriophage P1 is confirmed through experimental validation — not merely predicted from sequence homology — ensuring reliable performance in Bacteriophage P1-derived samples such as cell lysates, tissues, or serum.
• Use of this antibody with non-Bacteriophage P1 samples requires independent validation; predicted cross-reactivity should always be confirmed empirically.

How to interpret here: Ensure your experimental samples are of Bacteriophage P1 origin. If you require reactivity to additional species, contact our team to identify a cross-reactive alternative.

What it means: Unconjugated format means no detection label is attached to this antibody — you supply a compatible secondary antibody or detection reagent of your choice.

Why it matters:

• The Unconjugated format gives maximum flexibility: pair with HRP-, fluorochrome-, or biotin-conjugated secondary antibodies matched to your detection platform, enabling use across WB, IHC, IF, and ELISA without ordering separate conjugated primary formats.
• Signal amplification is possible by using a biotinylated secondary followed by a streptavidin-enzyme conjugate, which is not available with directly conjugated primary antibodies.

How to interpret here: Select an anti-host-species secondary antibody conjugated to your preferred detection label. For most indirect detection workflows, the Unconjugated primary antibody is the recommended starting format.

What it means: IgG is the immunoglobulin class and subclass of this antibody, defining its constant-region structure and effector functions.

Why it matters:

• Isotype IgG determines which secondary antibody constant-region specificities are compatible — isotype-specific anti-IgG1 or anti-IgG2a secondaries enable discrimination of co-stained antibodies from the same host species in multiplex experiments.
• For functional assays, isotype identity guides selection of Fc-receptor binding controls and isotype-matched negative controls required for rigorous experimental design.

How to interpret here: Use a negative control of the same isotype (IgG) to assess non-specific binding in your assay. If performing multiplex staining with multiple antibodies from the same species, select isotype-specific secondary antibodies to resolve each IgG signal independently.

What it means: This antibody is epitope-affinity purified from goat antiserum. indicates the chromatographic method used to isolate this antibody from the production matrix, ensuring a defined purity level.

Why it matters:

• This antibody is epitope-affinity purified from goat antiserum. removes bulk serum proteins that could cause non-specific binding or elevated background in downstream assays — a critical quality attribute for immunoassay performance.
• The This antibody is epitope-affinity purified from goat antiserum. process is routinely validated and documented by the manufacturer as part of QC release, providing traceability for GLP-adjacent studies.

How to interpret here: Confirm the purity specification on the Certificate of Analysis. For the most demanding applications (single-cell IF, proximity ligation), This antibody is epitope-affinity purified from goat antiserum. purity is the recommended minimum standard.

What it means: This antibody has been experimentally validated for 1 application: Western Blot.

Why it matters:

• Western Blot
• Each listed application represents an independently optimized protocol — not a theoretical prediction — giving you confidence that the antibody will perform reliably when used at the recommended conditions for that technique.

How to interpret here: Select the application that matches your assay (Western Blot) and refer to the datasheet for the validated dilution range specific to each technique. Using this antibody outside the listed validated applications requires independent optimization and performance verification.