ACE2 and severe acute respiratory syndrome: Evolutionary analysis of the ACE2/spike protein interface across the mammalian phylogeny could help reveal additional taxa that have had as yet unidentified exposure, over evolutionary timescales, to SARS-like CVs (i.e., CVs that utilize ACE2 in a similar manner as SARS-CoV and SARS-CoV-2) and thus could potentially be reservoirs of SARS-like CVs.