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PSE inhibits the propagation of H6N1 virus. (A) The HA titer of virus propagating in cells untreated (gray bar) or treated (white bar) with PSE was determined by HA tests. (B) The relative copy number of viral RNA in cells untreated (gray bar) or treated (white bar) with PSE was determined by qRT-PCR. Each value in (A) and (B) is the result of mean±S.D. of three independent experiments.
