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Titration by ELISA of HEV#4 and HEV#31 reactivity with recombinant baculovirus-expressed ORF2 protein from the Pakistani (SAR-55) and swine (Meng) HEV strains. Symbols: ■, HEV#4 with SAR-55 ORF2 protein; ●, HEV#4 with Meng ORF2 protein; ▴, HEV#31 with SAR-55 ORF2 protein; ⧫, HEV#31 with Meng ORF2 protein.
