title: Protozoa in sewage and waste water treatment systems.
mesh_terms: D000818:Animals; D016798:Ciliophora / Q000302:isolation & purification; D056890:Eukaryota / Q000302:isolation & purification*; D007564:Japan; D012722:Sewage; D014871:Water Microbiology
chemical_list: D012722:Sewage