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https://twitter.com/TheChiefNerd/status/17987370255936841141/Furin cleavage insert PRRAR: All viruses must utilize protease cleavage in order to gain entry to a cell and replicate. Diagram 1 = sequences of similar viruses. Diagram 2 = PRRAR was positioned upstream of the cleavage sites of Sars1. RRAR is not optimal and needs TMPRSS.
https://twitter.com/michaelpsenger/status/1658646420541550592Example #1 - 2013: Spurious hypoxemia occurs when patients with leukocytosis or thrombocytosis have low PaO2 on arterial blood gas analysis (ABG), but actual oxygen saturation is normal. .journal.chestnet.org/article/S0012-…