
Recombinant SARS MERS Spike S2 by ProSpec Bio is a recombinant antigen expressed in Sf9 insect cells (aa 752–1296, C-terminal His tag, 60.7 kDa, >85% pure), supplied as a solution. Sizes: 2 µg (sars-053), 10 µg (sars-053-1), 1 mg (sars-053-2). Available from MBP, a registered vendor at leading US research institutions.


