title: Planetary science. Search for martian life clears another hurdle.
authors.forename: Richard A
authors.initials: RA
authors.lastname: Kerr
mesh_terms: D002713:Chlorine / Q000032:analysis; D018559:Exobiology; D018535:Mars; D008697:Methane / Q000032:analysis; D013781:Texas
chemical_list: D002713:Chlorine; D008697:Methane