| 6B7N: reference: Cryo-EM structure of porcine delta coronavirus spike protein in the pre-fusion state., Shang J, Zheng Y, Yang Y, Liu C, Geng Q, Tai W, Du L, Zhou Y, Zhang W, Li F, J Virol. 2017 Oct 25. pii: JVI.01556-17. doi: 10.1128/JVI.01556-17. PMID: 29070693 |
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