title: Sewage water bacteria fills 'missing link' in early evolution of life on Earth.
mesh_terms: D001419:Bacteria / Q000235:genetics / Q000302:isolation & purification* / Q000648:ultrastructure; D005075:Biological Evolution; D002467:Cell Nucleus / Q000648:ultrastructure; D018534:Earth, Planet; D012722:Sewage / Q000382:microbiology*; D014871:Water Microbiology
chemical_list: D012722:Sewage