it was demonstrated that lipopolysaccharides ( lps ) of e. coli potently reduce the proliferative response of antigen-specific and alloreactive t cells when t-cell-depleted peripheral blood mononuclear cells ( e- cells ) were used as apc , whereas only limited inhibition was observed when lcl were used as apc in the presence of lps .
C1321301
peripheral blood mononuclear cells
C0007634
cells