Figure 4

Neighbor-joining tree of full length SGA env sequences for ZM211M and ZM211F. (A) The chronically infected ZM211M sequences are depicted in blue, and the superinfecting ZM211F sequences are depicted in red, while those in purple represent potential recombinant sequences between the blue and red sequences. (B) An expanded phylogenetic tree showing time points 0-36 months for the acutely infected ZM211F initial infecting virus (blue) is distinct from ZM211M (black). Sequences denoted by circles indicate the parental sequences (blue, red circle) and stars denote potential recombinant daughter sequences (purple stars) that were used for recombination analyses described below.