Fig. 1From: Origin and evolution analysis and genetic characteristics of echovirus 9 in ChinaThe MCC phylogenetic tree generated using the MCMC method based on the complete VP1 sequences of 121 E9 variants and the Chinese isolates was marked in red. The scale bar represents time in years. The tree was node-labelled with inferred dates of lineage splits. Each genotype is noted on the rightBack to article page