title: Retracted article: ammonium transport proteins from Archaeoglobus fulgidus.
authors: Institute of Veterinary Physiology, Free University of Berlin, Oertzenweg 19b, 14163, Berlin, Germany, danielcebo@zedat.fu-berlin.de.
authors: Daniel
authors: D
authors: Cebo
authors: Jörg R
authors: JR
authors: Aschenbach
authors: Martin
authors: M
authors: Kolisek