Fig. 2From: First report and genetic characterization of bovine torovirus in diarrhoeic calves in ChinaPhylogenetic analysis of BToV strains based on the amino acid sequences of their complete S genes. The phylogenetic tree was constructed by the neighbour-joining method with 1000 bootstrap replicates using MEGA 7.0 software. The black circles represent the new Chinese strainsBack to article page