As SARS-CoV-2 progresses through the respiratory tract, the ________blank of the virus identify host epithelial cells and attach to the cell surface.

Name: As SARS-CoV-2 progresses through the respiratory tract, the ________blank of the virus identify host epithelial cells and attach to the cell surface.
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The S proteins, or spike proteins, of SARS-CoV-2 are responsible for identifying and attaching to host epithelial cells, specifically by binding to the ACE2 receptor on the cell surface.

As SARS-CoV-2 Progresses Through the Respiratory Tract, the ________Blank of the Virus