SARS-CoV-2(143) coronavirus(77) COVID-19(75) SARS-CoV-2, Severe acute respiratory syndrome coronavirus 2(55) the SARS-CoV-2(52) acute respiratory syndrome(51) Protein(49) Infection(45) Viral protein(43) ACE2, angiotensin-converting enzyme 2(39) RBD, receptor-binding domain(37) virus(35) mechanism(29) Spike protein(29) binding(29) severe acute respiratory syndrome Coronavirus(28) cellular(28) acute respiratory syndrome coronavirus(28) domain(27) COVID-19 pandemic(27) Mutation(27) Viral(27) Critical(27) variant(26) respiratory(26) Host(25) Treatment(25) Interaction(24) inhibitor(24) biochemical(24)