FIG 3.

MFED values of human coronaviruses and their closest homologues in other host species. Mean MFED values for selections of representative sequences of each of the seven human coronaviruses and their closest homologues in other mammalian species considered to be their zoonotic source. Sequence selection was limited to up to four for each species listed in Table S2 in the supplemental material and displayed as individual points. Significance tests were not attempted as sequences were phylogenetically related.