Recombinant Andes Virus Nucleoprotein (Immunodominant Region). This region of the Andes orthohantavirus (ANDV, Andes virus) Nucleoprotein is composed of linear epitopes and serves as an immunodominant antigenic region, with cross-reactivity with other orthohantaviruses such as the Hantaan virus (HNTV) and Puumala virus (PUUV).