Western Blotting (WB), Immunohistochemistry (IHC), ELISA, Immunocytochemistry (ICC)
Specificity
The antiserum does not cross-react with any other component of human plasma. Inter-species cross-reactivity is a normal feature of antibodies to plasma proteins since they frequently share antigenic determinants. of this antiserum has not been tested in detail.
Characteristics
Horseradish peroxidase-conjugated IgG fraction of polyclonal rabbit antiserum to human lysozyme
Purification
Adsorption: Immunoaffinity adsorbed using insolubilized antigens as required, to eliminate antibodies cross-reacting with other with other plasma proteins. The use of insolubilized adsorption antigens prevents the presence of excess adsorbent protein or immune complexes in the antiserum. Hyperimmune antisera with strong precipitating activity are selected for fractionation by saltprecipitation and purification of the IgG fraction by DEAE-chromatography.
Immunogen
Lysozyme, a bacteriolytic enzyme, has a molecular weight of about 15,000. Its concentration in plasma is low, in milk the concentration is reported to be between 5 and 220 mg/ml. Also tears contain a considerable amount of lysozyme. Highly purified lysozyme is isolated from pooled milk. Freund’s complete adjuvant is used in the first step of the immunization procedure.
In enzyme-immunocytochemical and immunohistochemical techniques for the detection of lysozyme at the cellular and subcellular level in appropriately treated cell and tissue substrates, as detection reagent in non-isotopic methodology and solid phase immunochemistry (e.g. ELISA, Western blotting). This immunoconjugate is not pre-diluted. The optimum working dilution of each conjugate should be established by titration before being used. Excess labelled antibody must be avoided because it may cause high unspecific background staining and interfere with the specific signal. Working dilutions for histochemical and cytochemical use are usually between 1:100 and 1:500, in ELISA and comparable non-precipitating antibody-binding assays between 1:1,000 and 1:6,000.
Restrictions
For Research Use only
Format
Lyophilized
Concentration
IgG protein concentration 10 mg/ml. Peroxidase/IgG protein molar ratio (E/P) approximately 1.7. No foreign proteins added. Enzyme marker Horseradish peroxidase enriched for isoenzyme C (RZ=3.2).
Buffer
Horseradish peroxidase-coupled purified hyperimmune IgG lyophilized from a solution in phosphate buffered saline (PBS, pH 7.2)
The reactivity of the antiserum is restricted to lysozyme. In immunoelectrophoresis and radial immuno-diffusion (Ouchterlony), using various antiserum concentrations against normal human milk and tears a single precipitin line is obtained which shows a reaction of identity with the precipitin line obtained with purified lysozyme. No reaction is obtained with any other plasma protein component or serum