Aim To investigate whether FP could affect antigen specific regulatory T cell(Treg) activation in order to explore the interactions between HIV gp41 fusion peptide(FP)and the immune cells.Methods CD4 + CD25 + regulatory T cells(Treg)and CD4 + CD25effect T cells(Teff) were separated from splenocytes of DO11.10 OVA TCR Tg mice by immune magnetic beads and co-cultured for 3 days.Treg could inhibit the proliferation of co-cultured Teff cells after OVA323-339 stimulation,meanwhile the effects of FP on this Treg ...