Alignment of amino acid of FIV on envelop protein V3-V5 regions.

V3-V5 region amino acid sequences of FIV strains identified in this study (red font) were aligned with those of representatives FIV subtypes in GenBank (black for subtype A, blue for subtype A/B; green for subtype B; orange for subtype C, pink for subtype D, and brown for subtype E). Identical nucleotides at given positions are represented by dots (·), gaps are represented by dashes (-).