title: Mycobacterium avium subspecies paratuberculosis in free-living amoebae isolated from fields not used for grazing.
authors.affiliation: Faculty of Veterinary Science, University of Liverpool, Leahurst, Chester High Road, Neston, Cheshire CH64 7TE.
authors.forename: C I
authors.initials: CI
authors.lastname: White
authors.forename: R J
authors.initials: RJ
authors.lastname: Birtles
authors.forename: P
authors.initials: P
authors.lastname: Wigley
authors.forename: P H
authors.initials: PH
authors.lastname: Jones