Description 描述：Chromatographically purified through step five of the procedure of Yamada and Yasunobu, J. Biol. Chem., 237, 1511 (1962). A lyophilized powder. (One IU = 4,330 Tabor Units).Activity/Specification：≥17 Tabor units/mg dw网站链接：http://www.worthington-biochem.com/PAO/cat.html