Feline Coronavirus 3c Protein: A Candidate for a Virulence Marker?

Figure 1

Phylogenetic tree constructed using the neighbor-joining method and the maximum composite likelihood substitution model for the FCoV 3c gene. The numbers next to each node represent the values of 1,000 bootstrap repetitions, and only those above 50% are shown. The scale represents the number of substitutions per site. For easy identification of the samples, the following nomenclature was used: cat identification/sample source/presence (+) or absence (−) of FIP/cat origin/clone number.