
Recombinant Hepatitis B Surface Antigen preS2 by ProSpec Bio is a recombinant antigen expressed in E. coli (55 aa, 5.7 kDa, >95% pure). Sizes: 10 µg (hbs-874), 50 µg (hbs-874-1), 1 mg (hbs-874-2). Available from MBP, a registered vendor at leading US research institutions.


