This item MFG by HYPHEN BioMed and Dis. by Aniara Diagnostics. Highly purified human Thrombin (MW=35,000 Da), mainly in the alpha form, lyophilized with PEG, NaCl, Glycine, BSA, Calcium and stabilizers. Specific activity > 2000 NIH/mg. For in vitro use only. 10 vials x 100 NIH.