we are doing in the lab. dan: why is this site so interesting and so dangerous? was listening to you there, you are saying it can occur in nature, it's possible that we haven't seen it yet in nature? >> we've never seen it in the sars coronavirus family affect viruses so if it doesn't exist naturally, it can't really occur through evolution. evolution can be traced through genetic research into the family of coronavirus this to the work they were doing, pat femina coronavirus has never seen combined to the spike protein by a protein that is the famous