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Alignment of highly conserved stem-loop (s2m) sequences present in the 3′ UTR of a variety of coronaviruses. This highly conserved region, flanked by highly divergent sequence (not shown), is found in TCoV, IBV and other avian coronaviruses. The s2m sequence is also found in the atypical group III coronavirus SARS-CoV and the recently sequenced coronavirus isolated from an Asian Leopard cat.
