title: [Intraspecies variability of bifidobacteria colonizing human gastro-intestinal tract].
abstract: The results of intraspecies heterogeneity analysis of 4 bifidobacterial species, B. longum, B. animalis subsp. lactics, B. bifidum and B. dentium colonizing intestines of people of different age groups are presented in the paper. A high level of intraspecies variability has been revealed for all species using PCR with primers to short nucleotide repeats. The dendrogram of genetic relationships between bifidobacteria has been constructed on the basis of results of PCR-analysis with the unweighted pair group method of arithmetic mean (UPGMA). Strains analyzed have formed groups according to their species designation.
authors.forename: L B
authors.initials: LB
authors.lastname: Zelena
authors.forename: N K
authors.initials: NK
authors.lastname: Kovalenko
authors.forename: O A
authors.initials: OA
authors.lastname: Poltavska
mesh_terms: D001644:Bifidobacterium / Q000235:genetics*; D041981:Gastrointestinal Tract / Q000382:microbiology*; D014644:Genetic Variation; D006801:Humans; D016133:Polymerase Chain Reaction; D012091:Repetitive Sequences, Nucleic Acid