BackgroundThe reactivity of the antiserum is restricted to the Fc portion of the IgG2a molecule. In immunoelectrophoresis and radial immunodiffusion, using various antiserum concentrations against mouse serum of the allelic type Igh-1b, including C57Bl and SJL/J, a single characteristic precipitin line is obtained which shows a reaction of identity with the precipitin line obtained with purified IgG2a(1b). No precipitation reaction is obtained with purified IgG2a(1a) (Balb/C, CBA, AKR and NZB), other IgG subclasses, IgA, IgG/Fab fragments or other serum proteins. In enzyme-immunocytochemical and immunohistochemical staining for the detection of IgG2a(1b) at the cellular an subcellular level. In non-isotopic assay methodology (e.g. ELISA and Western blotting) to identify and measure IgG2a(1b) in mouse serum or other body fluids. This immunoconjugate is not pre-diluted. Its optimum working dilution should be established by titration. Excess labelled antibody may by itself cause high unspecific background staining or interfere with the specific signal.

SourceHighly purified normal homogenous IgG2a(1b) isolated from mouse serum. Freund’s complete adjuvant is used in the first step of the immunization procedure.

ProductHorseradish peroxidase-coupled hyperimmune IgG fraction, lyophilized from a solution in phosphate buffered saline (pH7.2). No preservative added, as it may interfere with the antibody activity. It is reconstituted by adding 1 ml sterile distilled water, spun down to remove insoluble particles, divided into small aliquots, frozen and stored at or below -20°C.

Product Form: HRP

Formulation: Horseradish peroxidase-coupled hyperimmune IgG fraction, lyophilized from a solution in phosphate buffered saline (pH7.2). No preservative added, as it may interfere with the antibody activity.

SpecificityHorseradish peroxidase-conjugated IgG fraction of polyclonal Sheep antiSerum to Mouse IgG2a(1b), allotype specific.

Species Reactivity: The antiSerum does not cross-react with any other component of the Mouse Ig system. Inter-species crossreactivity is a normal feature of antibodies to immunoglobulins, since Ig of different species frequently share antigenic determinants. Cross-reactivity of this antiSerum has not been tested in detail; expected chance of cross-reactivity will be small.

ApplicationsELISA,Immunocytochemistry,Immunohistochemistry (paraffin),Dot blot,Immunoblotting.

StorageThe lyophilized conjugate is shipped at ambient temperature and may be stored at +4°C; prolonged storage at or below -20°C.Prior to use, an aliquot is thawed slowly in the dark at ambient temperature, spun down again and used to prepare working dilutions by adding sterile phosphate buffered saline (PBS, pH 7.2). Repeated thawing and freezing should be avoided. Working dilutions should be stored at +4°C, not refrozen, and preferably used the same day. If a slight precipitation occurs upon storage, this should be removed by centrifugation. It will not affect the performance of the immunoconjugate.

CautionThis product is intended FOR RESEARCH USE ONLY, and FOR TESTS IN VITRO, not for use in diagnostic or therapeutic procedures involving humans or animals. It may contain hazardous ingredients. Please refer to the Safety Data Sheets (SDS) for additional information and proper handling procedures. Dispose product remainders according to local regulations.This datasheet is as accurate as reasonably achievable, but Exalpha Biologicals accepts no liability for any inaccuracies or omissions in this information.