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Schematic presentation of the replication of virus and mechanism of action of ACE2 in host cell (alveolar cell) [9, 10]. TMPRSS2, transmembrane protease, serine 2; HCQ, hydroxy chloroquine; ARB, angiotensin II receptor blocker; S, spike protein; E, envelope glycoprotein; M, membrane glycoprotein; N, nucleocapsid protein
