Fig. 6From: Less biomass and intracellular glutamate in anodic biofilms lead to efficient electricity generation by microbial fuel cellsRelative ratios of a ATP/ADP and b NADH/NAD+ in microbial cells growing on MFC anodes (MFC-1-anode, black bars; MFC-2-anode, white bars). Values were calculated based on the amounts of these intracellular metabolitesBack to article page