Figure 4From: Characterization of humoral responses to soluble trimeric HIV gp140 from a clade A Ugandan field isolateEvaluation of IgG titers elicited in sera of immunized rabbits against heterologous HIV gp120. Five-fold dilutions of heat inactivated rabbits sera, collected at 4 weeks after the last antigen administration (week 12), were evaluated in ELISA for their reactivity with heterologous gp120s. The 50% binding is indicated.Back to article page