The e.coli derived HEV Mosaic protein contains 12 HEV immunodominant regions from ORF2 and ORF3 having a molecular mass of 38.5 kDa.; 25mM Tris-HCl, 1mM EDTA, 0.5M urea and 50% glycerol. GS-4B Sepharose-Affinity Purification. Immunoreactive with sera HEV-infected individuals.