Components: N-Acetylneuraminic acid aldolase 25 -¦l; N-Acetylneuraminic acid 200 -¦l; α(2→3,6,8,9)-Neuraminidase 25 -¦l; Fetuin, bovine 0.5 mg; Lactic dehydrogenase 25 -¦l; β-NADH disodium salt 3 vials; Tris-HCl, pH 7.5 1 ml; Sialidase buffer 500 -¦l