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Typical current versus time amperograms obtained at ITO-SWCNT-Osbpy sensors interfaced with (A) wild type macrophage cells (MPI) (B) that are TLR 4 deficient (TLR 4 – /−) and that were exposed to 1 μg/mL LPS. (C) Wild type cells and (D) TLR4 deficient cells that were exposed to 5 μg/mL phorbol 12-myristate 13-acetate (PMA). All amperograms were performed at an applied potential of 150 mV in 50 mM PBS containing 0.1 M KCl.
