Figure 2

Relative composition of unique association rules involving multiple genes ( Gag , Pol and Nef ) and epitope types (Cytotoxic T Lymphocyte (CTL), T-Helper (Th) and antibody (Ab) epitopes). The 6142 unique association rules are classified according to the genes that harbor these epitopes. The pie-chart inside each segment represents the division according to the epitope region types involved. The single association rule in Nef-only category involved CTL and Th epitopes, while that in Pol-Env category involved CTL and Ab epitopes. Out of four association rules involving epitopes from Gag and Env, three belonged to CTL-Ab and one belonged to Th-Ab epitope regions types.