Aprotinin Cas: 9087-70-1 Source: bovine lung Appearence: white crystalline power Activity: >=5400kiu/mg One kallikrein inhibitory unit (kiu) is identical to the quantity of protease inhibitor that has the ability to inhibit two kallikrein units by 50% under optimal conditions. (1000 kiu = 1 ku) Paking: inner : al tin ; outer :carton Shipment:in stock Storage: The lyophilized powder can be stored at 2~8