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Figure 1 | Retrovirology

Figure 1

From: Molecular characterization of the HIV-1 gagnucleocapsid gene associated with vertical transmission

Figure 1

Phylogenetic analysis of 168 HIV-1 NC and p6 sequences from six mother-infant pairs; pairs B, C, D, E, F, and H. The neighbor-joining tree is based on the distance calculated between the nucleotide sequences from the six mother-infant pairs. Each terminal node represents one sequence. The values on the branches represent the occurrence of that branch over 1,000 bootstrap resamplings. Each pair formed a distinct subtree, and within each subtree the mother and infant sequences were generally separated into clusters, although some intermingling was observed. The formation of subtrees indicated that epidemiologically linked mother-infant pairs were closer to each other evolutionarily than to epidemiologically unlinked pairs, and that there was no PCR cross-contamination. The placement of the HIV-1 lab control strain NL4-3 indicates that no PCR contamination occurred.

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