Figure 3From: Heterogeneous antigenic properties of the porcine reproductive and respiratory syndrome virus nucleocapsid Alignment of the GP3 and GP4 amino acid sequences of selected PRRSV genotype 1 isolates. In comparison with LV, the amino acid deletions of different lengths in the overlapping region of GP3 (A) and GP4 (B) of selected PRRSV genotype 1 isolates are boxed, and the 4 additional amino acids at the C-terminus of GP3 are shaded.Back to article page