Private channel session 49
1 messages over —, 2020-05-12 – 2020-05-12.
A “conversation” here is an activity session — a run of messages with under 60 minutes of silence inside it. The channel had no native conversation boundaries.
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Just to confirm: there's no evidence of the S1/S2 insertion site being deleted in any natural SARS-CoV-2 genome? Are there any synonymous/nonsynonymous mutations at this site in nature? If there's strong purifying selectionindicative of functional constraint would this argue against it being acquired in cell culture?