Fig. 4From: Molecular linkage tracing of HIV-1 transmission events in seroconcordant couples in Guangxi Province, Southeastern ChinaSingle genome amplification analysis for five controversy couples. Aligned SGA sequences from each couple were used to generate maximum-likelihood phylogenetic trees independently based on 1000 bootstrap replicates. Here the pairs no. 057, 223, 293, 294, and 307 are analyzed. Black circle indicates the donor, white circle indicates the recipientBack to article page