. "The chemical reactions and pathways resulting in the breakdown of compounds that contain an indole (2,3-benzopyrrole) skeleton." . . . . . . "indole-containing compound catabolic process" . "indole derivative catabolic process" . "indole derivative catabolism" . "indole-containing compound breakdown" . "indole-containing compound catabolism" . "indole-containing compound degradation" . . . . . . . . . . .