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Figure 1 | Veterinary Research

Figure 1

From: Immunity raised by recent European subtype 1 PRRSV strains allows better replication of East European subtype 3 PRRSV strain Lena than that raised by an older strain

Figure 1

A phylogenetic tree of circulating Belgian virus isolates. Molecular phylogenetic analysis of full genome nucleotide sequences was constructed using the Neighbor-Joining method. Phylogenetic relationships were estimated using the Clustal Omega method. Prototype subtype 1 (LV) and subtype 3 (Lena) PRRSV-1 strains, vaccine parental (DV) and attenuated (MLV-DV) PRRSV-1 strains were added to phylogenetic tree. The optimal tree is drawn to scale. Numbers indicate bootstrap values of 100 replicates. Strain nomenclature is as follows: name or diagnostic number/year of isolation/country of origin/GenBank accesion number.

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Veterinary Research

ISSN: 1297-9716