We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMultiple acquisition of methanogenic archaeal symbionts by anaerobic ciliates.Authorsvan Hoek AH; van Alen TA; Sprakel VS; Leunissen JA; Brigge T; Vogels GD; Hackstein JHPublicationMolecular biology and evolution, 2000, Vol 17, Issue 2, p251ISSN0737-4038Publication typearticleDOI10.1093/oxfordjournals.molbev.a026304