Fig. 2

Alignment of inverted terminal repeat (ITR) sequences at the 5′ terminus of the genome of strain FM, YY, and ZW of MDPV. Dashes denote nucleotide deletions. The bubble region of ITR comprises of 45 nucleotides and is indicated by open circles above the letters. The nucleotide differences between three strains are shaded grey. The nucleotides constituting the D region are italicized and underlined, which complement the D′ sequences at the 3′ ITR. The numbers above the alignment denote the nucleotide’s position