title: DNA and nitrogen relationships in bulking activated sludge.
mesh_terms: D004247:DNA / Q000032:analysis*; D009584:Nitrogen / Q000032:analysis*; D012722:Sewage / Q000032:analysis*; D014876:Water Pollution / Q000517:prevention & control*
chemical_list: D012722:Sewage; D004247:DNA; D009584:Nitrogen