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Broad spectrum inhibitory activity of GOS against coronaviruses. a) Phylogenetic trees created with RdRp amino acid sequences from all four CoV genogroups. b–e) The inhibitory effect of GOS on representative coronaviruses PEDV (b), SADS‐CoV (c), IBV (d), and PDCoV (e). Data are presented as mean ± s.d. (n = 3).
