title: Did archaeal and bacterial cells arise independently from noncellular Precursors? A hypothesis stating that the advent of membrane phospholipid with enantiomeric glycerophosphate backbones caused the separation of the two lines of descent
authors.affiliation: Department of Chemistry, University of Occupational and Environmental Health, Yahatanishi-Ku, Kitakyushu 807, Japan.
authors.initials: Y
authors.lastname: Koga
authors.initials: T
authors.lastname: Kyuragi
authors.initials: M
authors.lastname: Nishihara
authors.initials: N
authors.lastname: Sone