has role protective antigen role protective antigen Hantavirus protein M Segment Allen Xiang Researchers vaccinated hamsters with a vaccinia virus-vectored vaccine expressing the M and the S segments of Hantaan (HTN) virus and challenged them with HTN, Seoul (SEO), or Puumala (PUU) virus. Study found that vaccinated hamsters, challenged with HTN or SEO virus, were neither viremic nor had evidence of virus in their lungs or kidneys [PubMed: 7666542]. Protegen ID: 492; NCBI Protein GI: 1389703; NCBITaxon: 11599 protein Oliver He