title: Ancient life on Mars?
authors.forename: R A
authors.initials: RA
authors.lastname: Kerr
mesh_terms: D002254:Carbonates / Q000032:analysis; D018559:Exobiology; D005118:Extraterrestrial Environment; D052203:Ferrosoferric Oxide; D005296:Ferrous Compounds / Q000032:analysis; D005580:Fossils; D007501:Iron / Q000032:analysis; D018535:Mars; D019110:Meteoroids; D010087:Oxides / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*
chemical_list: D002254:Carbonates; D005296:Ferrous Compounds; D010087:Oxides; D011084:Polycyclic Aromatic Hydrocarbons; D007501:Iron; C022597:ferrous sulfide; D052203:Ferrosoferric Oxide