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HCoV-HKU1 RNA species present during infection of HAE. Representative Northern blot analysis for total RNA isolated from HCoV-HKU1-infected HAE. RNA species are indicated by arrows to the right of the autoradiograph. HE, hemagglutinin; S, spike; ORF 4, accessory open reading frame; E, envelope; M, membrane; N, nucleocapsid; N2, internal ORF in N. (A) Total RNA, 0.1 μg; (B) total RNA, 1 μg.
