Goat anti-human IgA (alpha chain) is a FITC conjugated secondary antibody which binds to human IgA (alpha chain). Antibody is specially adsorbed against bovine, mouse, rabbit serum. FITC, fluorescein-5-isothiocyanate, has Amax = 494 nm, Emax = 518 nm. Fluor to protein ratio is 3-7 moles FITC per mole antibody. Antibodies are affinity purified using solid phase human IgA.