Biome classification for stools with respect to interleukin 1β (IL-1β) production. The microbial composition of various stool samples at the level of order is shown with each column representing an individual sample. Overlying graph (dotted line) represents IL-1β levels produced by incubation of corresponding crude stool lipopolysaccharide extracts with toxin B. White dotted lines represent 25th and 75th percentiles for IL-1β levels.