Anti-rabbit primary antibodies are immunoreagents that bind specifically to antigens of rabbit origin, enabling the detection and characterization of rabbit-derived proteins and immunoglobulins. In practice, the vast majority of reagents marketed under this designation are secondary antibodies—anti-rabbit immunoglobulin reagents raised in a different host species (e.g., goat, donkey, or chicken) that bind rabbit primary antibodies and provide a detection signal. These are indispensable tools because rabbits are among the most widely used hosts for generating polyclonal and monoclonal primary antibodies, and nearly every rabbit-derived primary antibody requires a compatible anti-rabbit secondary reagent for visualization.
Applications
Anti-rabbit antibodies are validated across a broad spectrum of immunoassay platforms. In Western blotting, they are used with enzyme conjugates (HRP, AP) or fluorophores to detect rabbit primary antibodies bound to immobilized proteins. In immunohistochemistry and immunocytochemistry, they enable spatial localization of rabbit-derived primary antibodies in tissue sections and cultured cells. In ELISA, they serve as detection reagents in sandwich and indirect formats. In flow cytometry, fluorophore-conjugated anti-rabbit reagents enable indirect staining when directly conjugated primary antibodies are unavailable. They are also employed in immunoprecipitation, ChIP, and super-resolution imaging, with highly cross-adsorbed preparations minimizing background in demanding applications.
