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Thrombin from bovine plasma, lyophilized powder, 40-500 NIH units/mg protein (biuret)
Thrombin from bovine plasma, lyophilized powder, 600-2,000 NIH units/mg protein (biuret)
Thrombin from bovine plasma, lyophilized powder, ≥2,000 NIH units/mg protein (E1%/280 = 19.5)
Thrombin from bovine plasma, ≥60 NIH units/mg protein (biuret)
Thrombin from bovine plasma, Suitable for manufacturing of diagnostic kits and reagents