Fig. 1From: The inference of HIV-1 transmission direction between HIV-1 positive couples based on the sequences of HIV-1 quasi-speciesMCMC tree for the env, gag, and pol gene dataset of couple 3 using BLAST-selected GenBank and local controls in A, B, and C, respectively. The red indicates the sequences of husband while the blue is his wife’s. The black represents control sequencesBack to article page