HNRNPA1 and viral infectious disease: Viral infections are known to regulate the cellular localization of hnRNPA1; therefore, to ascertain and confirm the enrichment of hnRNPA1 and IAV NP in various subcellular compartments, cellular fractionation assay was performed using Abcam fractionation kit (ab 109719) following the manufacturer’s protocol in pcDNA3.1-myc/HisB-NP transfected HEK cells and PR8-infected cells (MOI = 1).