Figure 5:Human intestinal bacterial phylogenetic composition normalized to their total fatty acid responses at the species level after 48 h exposure to 0 (Control), 25 (L-AgNP), 100 (M-AgNP), and 200 (H-AgNP) mg/L silver nanoparticles (AgNP), respectively. Means of the triplicate samples in each treatment with >1% relative abundance were used for sequence identity, whereas groupings of less abundant species shown as ‘Others‘. Asterisk (*) symbol represents significant differences (p<0.01) at species level compared to the control. Non-normalized graphs are shown in Figure S6.