Figure 3From: A Metabolic Biofuel Cell: Conversion of Human Leukocyte Metabolic Activity to Electrical CurrentsCurrents produced from the PEM fuel cell following introduction of activated WBCs and subsequent replacement of the WBC suspension with PBS (n = 3). A significant decrease in the current output occurs, indicating that the WBC suspension is the primary contributor to the observed currents (p < 0.05).Back to article page