Figure 1From: Protective versus pathogenic anti-CD4 immunity: insights from the study of natural resistance to HIV infectionSchematic representation of the interaction between CD4 and gp120, with reference to the formation of new epitopes. The indicated monoclonal antibodies are either exclusively (CG10) or preferentially (DB-81) binding to CD4 complexed to gp120 (right part of the figure), as compared to CD4 only (left part of the figure). Similarly, the anti-gp120 D19 monoclonal antibody is represented, which binds with higher affinity to gp120 complexed to CD4, as compared to (R5-coreceptor restricted) gp120 only. The affinities of the antigen-antibody interactions are proportional to the thickness of the arrow pointing to the epitope.Back to article page