Goat anti-rabbit IgG (H&L), F(ab) '2 fragment, is FITC (fluorescein-5-isothiocyanate) conjugated secondary antibody which binds to all rabbit IgGs in immunological assays. FITC has Amax = 494 nm, Emax = 518 nm. Fluor to protein ratio is 3-7 moles FITC per mole antibody. Antibody is adsorbed against bovine, human, mouse IgG/serum. Antibody solution may contain small amounts of intact IgG. F(ab)'2 fragment