78KiB, 828x630, vvc.jpg View SameGoogleiqdbSauceNAO Anonymous Sat 14 Aug 06:23:16 2021 No.13516999 ViewReplyOriginalReport Quoted By: >>13517013 A simple question as a mathematician here! What amino acid substitution or deletions will lead to 100% fatality rate?! Is there a maximal binding affinity for the ACE2 receptor?