Goat F(ab')2 Fragment to Human IgM

Analysis Note The total protein is measured using the Biuret procedure, with bovine albumin as a standard. Antibody titer of the IgG fraction is standardized by equivalence-point precipitation. F(ab')2 fragments are tested for purity and specificity at a minimum of 20 mg/mL using immunoelectrophoresis. The product is goat F(ab')2; no trace of albumin, whole molecule IgG or Fc is detected. Preparation Method The F(ab')2 fragment is prepared from the specific goat IgG fraction by limited digestion with pepsin, and purified by gel filtration or affinity chromatography. The resulting F(ab')2 fragment is dialyzed into 0.02M sodium phosphate, 0.14M sodium chloride, pH 7.3, 0.05% sodium azide, adjusted to standard titer, filtered through a 0.22 μm filter, vialed and lyophilized. Applications Goat F(AB')2 fragment to Human IgM is use as a precipitating antibody. It gives sharp precipitin lines in immunoelectrophoresis and immunodiffusion techniques. This product is suitable for conjugation with enzymes, radiolabels, fluorochromes or other markers, and for attachment to solid supports for use as an immunoadsorbant. This product is suitable for use as a primary reagent in enzyme immunoassays, fluorescein immunoassays and blot, cell or tissue immunostaining. F(ab')2 fragments are recommended for staining of cells or tissues which contain Fc receptors. (Note: Affinity purified antibodies are recommended to avoid non-specific binding from the inherent antibodies of host animals). Product Description Product is the lyophilized powder of goat F(ab')2 fragment to human IgM (5Fc μ) and buffer salts.