Detection of subtypes B and F in the gag-pol region of CRFs

. Z-scores of CRF strains containing segments of (a) B subtype; (b) F subtype. The numbers on the X-axis correspond to the various CRF strains as annotated in the Los Alamos HIV database. An abbreviated annotation is used. For example, the label 14 refers to CRF14_BG and 28 refer to CRF28_BF etc. The solid and dashed lines correspond to the thresholds Tp and Tn respectively.