Phylogenetic analysis of bacteria preserved in a permafrost ice wedge for 25,000 years.

@article{Katayama2007PhylogeneticAO,
  title={Phylogenetic analysis of bacteria preserved in a permafrost ice wedge for 25,000 years.},
  author={Taiki Katayama and Michiko Tanaka and Jun Moriizumi and Toshio Nakamura and Anatoli V. Brouchkov and Thomas A Douglas and Masami Fukuda and Fusao Tomita and Kozo Asano},
  journal={Applied and environmental microbiology},
  year={2007},
  volume={73 7},
  pages={2360-3}
}
Phylogenetic analysis of bacteria preserved within an ice wedge from the Fox permafrost tunnel was undertaken by cultivation and molecular techniques. The radiocarbon age of the ice wedge was determined. Our results suggest that the bacteria in the ice wedge adapted to the frozen conditions have survived for 25,000 years. 

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