Figure 3From: Parvovirus B19 infection in Tunisian patients with sickle-cell anemia and acute erythroblastopenia Phylogenetic tree. The phylogenetic tree of sequence R representing the four B19 virus isolates R1 to R4 was visualized by TreeView following alignment in BioEdit and Clustal W as shown in Figure 2. See legend to Figure 2 for accession numbers.Back to article page