Illustration of the SARS spike protein as a glass surface model with indicated deeper ribbon model on a dark background. The spike glycoprotein spreads over the surface of the SARS-CoV-2 virus and docks with the ACE2 receptors of the cell surfaces of the lung tissue to infect them. The illustration is based on structural data from Kirchdoerfer, R.N., Wang, N., Pallesen, J., Turner, H.L., Cottrell, C.A., McLellan, J.S., Ward, A.B., by medicalgraphics/F1online

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