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Neutralizing antibodies are considered to be an important protective parameter used in HIV-l vaccine evaluation.However,the exact role that neutralizing antibodies plays in controlling the disease progression of HIV-1 infected peoples is still undetermined.In this paper,we compared the protective function of the neutralizing antibody response in the plasma from LTNP and TP against clade B and clade C pseudoviruses.No difference in the neutralizing activities between the plasma from LTNP and TP was found,which was consistent with the most recent reports.In addition,no correlations between the titer or breadth and CD4+ or viral load in HIV-1 infected individuals were found.The protective roles played by neutralizing antibodies in controlling disease progression of HIV-1 infected people need to be considered in a new viewpoint.