The multibasic cleavage site in H5N1 virus is critical for systemic spread along the olfactory and hematogenous routes in ferrets.
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J Virol. 2012 Apr;86(7):3975-84. doi: 10.1128/JVI.06828-11. Epub 2012 Jan 25.
J Virol. 2012.
PMID: 22278228
Free PMC article.