Unconjugated anti-pig primary antibodies are purified immunoglobulins that bind specific porcine antigens without any attached reporter label, serving as the foundational, label-free detection layer for nearly every immunoassay format. Their value lies in this very absence of a label: the unconjugated format provides maximum flexibility for indirect detection, allows the user to select the optimal secondary reagent for a given experiment, and serves as the starting material for custom conjugation to fluorophores, enzymes, or beads. In swine immunology, where the validated reagent toolkit remains considerably less developed than in human or mouse research, these antibodies are essential for characterizing immune cell subsets, monitoring vaccine responses, and supporting xenotransplantation studies.

Applications

Unconjugated anti-pig primary antibodies are validated across a broad spectrum of immunoassay platforms. In flow cytometry, they are used with fluorophore-conjugated secondary reagents for immunophenotyping of porcine peripheral blood mononuclear cells and tissue-derived leukocytes. In immunohistochemistry (IHC), they enable staining of frozen and formalin-fixed, paraffin-embedded porcine tissues. Additional applications include Western blotting, immunoprecipitation (IP), ELISA, and immunofluorescence (IF). The unconjugated format is particularly valuable in functional assays: low-endotoxin and carrier-free preparations can be used for neutralization, receptor blockade, and cell activation studies, and certain clones possess intrinsic functional activity, such as clone PPT3, which is mitogenic when immobilized. Unconjugated antibodies are also the preferred format for custom conjugation in laboratories that wish to generate their own labeled reagents.