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Fig. 1 | Virology Journal

Fig. 1

From: Existence of various human parvovirus B19 genotypes in Chinese plasma pools: genotype 1, genotype 3, putative intergenotypic recombinant variants and new genotypes

Fig. 1

a Phylogenetic tree based on 312 sequences (118 obtained in this study and 194 retrieved from GenBank). b Phylogenetic tree based on 21 B19V-genotype 3 sequences from this study and a set of sequences downloaded from GenBank used as references for the different genotypes. Phylogenetic analyses are based on a region of 1069 nt and the neighbor-joining algorithm using the Kimura two-parameter model. The reference sequences are shown without symbols and are labeled with their GenBank accession number and isolate name. Sequences are from three Chinese blood products manufacturers: Manufacture A (black circles); Manufacture B (black squares); and Manufacture C (black triangles). Bootstrap replication frequencies ≥50 % are indicated above nodes. The basis of each isosceles triangle is proportional to the number of sequences. Branch lengths are drawn to scale

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Virology Journal

ISSN: 1743-422X