Figure 4 . Phylogenetic analysis of the Mamastrovirus2 sequences identified in FPV-cases and healthy controls using the ORF1b and capsid protein amino acid alignment and LG+R3 and LG+F+R8 amino acid substitution model, respectively. The Mamastrovirus 2sequences from the FPV-case libraries are presented in blue, the sequences from the healthy control libraries in red and the feline astrovirus species and Mamastrovirus 2 sequence identified in the pilot study in green. The scale bar represents the number of amino acid substitutions per site. The tree was midpoint rooted for clarity only.