
Recombinant Hepatitis B Surface Antigen ayw subtype by ProSpec Bio is a recombinant antigen expressed in E. coli (6xHis tag, 31 kDa, >99% pure), supplied as a solution. Sizes: 10 µg (hbs-877), 50 µg (hbs-877-1), 1 mg (hbs-877-2). Available from MBP, a registered vendor at leading US research institutions.


