Comparison of the SARS‐CoV‐2 S and SARS‐CoV‐1 S structures: ribbon diagrams of the (A) SARS‐CoV‐2 S and (D) SARS‐CoV‐1 S [PDB 6NB6] ectodomain cryo‐EM structures. S1 subunits of (B) SARS‐CoV‐2 S and (E) SARS‐CoV‐1 S. S2 subunits of (C) SARS‐CoV‐2 S and (F) SARS‐CoV‐1 S. 28  cryo‐EM, cryogenic electron microscopy; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2 [Color figure can be viewed at wileyonlinelibrary.com]