title: Clostridium perfringens as a water pollution indicator.
mesh_terms: D003016:Clostridium perfringens / Q000302:isolation & purification*; D004926:Escherichia coli / Q000302:isolation & purification; D005243:Feces / Q000382:microbiology; D006801:Humans; D012722:Sewage; D014876:Water Pollution
chemical_list: D012722:Sewage