Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Estimation of the time of interspecies transmission of SARSr-CoV. Squares denote the MRCA of all SARSr-CoV (1972), the MRCA of human/civet SARSr-CoV and the closest SARSr-Rh-BatCoV (1995), and the MRCA of human and civet SARSr-CoV (2001), respectively.
