Clustering analysis of the compositions of the abundant (>1%) bacterial genera (A) and fungal orders (B) in the cecum of chickens fed a basal diet plus 0 (control), 40 (LYS40), 100 (LYS100), or 200 ppm (LYS200) lysozyme or 400 ppm flavomycin. Values in individual squares represent relative percentage abundances of individual genera or orders. Unc represents unclassified.</p