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. 2016 Feb 25;13:33. doi: 10.1186/s12985-016-0488-4

Fig. 3.

Fig. 3

Maximum clade credibility (MCC) tree of HCoV-HKU1 genotypes. Estimation of the time of the most recent common ancestors (tMRCA) with 95 % highest posterior density (95 % HPD) of HCoV-HKU1 genotypes based on the spike gene (S1 domain) (897 bp). Data were analyzed under relaxed molecular clock with GTR + I substitution model and a constant size coalescent model implemented in BEAST. The Malaysian HCoV-HKU1isolates obtained in this study were color-coded and the HCoV-HKU1 genotypes (a) to (c) were indicated. The MCC posterior probability values were indicated on the nodes of each genotype