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Published in Science, a new study has shown how DNA from viruses embedded into the human genome from ancient infections can help guard our cells against some present-day viruses.Remnants of ancient virusesSmall fragments of DNA from ancient viruses 鈥?called endogenous retroviruses 鈥?can be found in the genomes of many animals, from mice and chickens to cats and sheep. Retroviruses insert their RNA into a host cell, which is first converted into DNA before being integrated into the host鈥檚 genome. This effectively hijacks the host鈥檚 cells, providing them with the genetic instructions required to produce more copies of the virus.Such endogenous retrovirus sequences make up around 8% of the human genome 鈥?acco
nike dunk unting for approximately f
new balance 327 our times the amount of protein-coding human genes. Nevertheless, these genes can support the host鈥檚 immunity a
adidas yeezy gainst modern-day viruses by blocking them from entering host cells.When retroviruses enter and infect a cell, a so-called 鈥渆nvelope protein鈥?on the ISLAMABAD:A woman was killed in a hit-and-run in G-7/2. Waheed Ahmed lodged a complaint with the Karachi Company police that a speeding motorcyclist hit his mother, Shahnaz Bibi, while she was crossing a road and fled. His mother was t
stanley cups aken to the Pakistan Institute of Medical Sciences (Pims) where she was pronounced dead. The polic
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nb balance a case against the unidentified motorcyclist. No arrests were made till the filing of this report.Published in The Express Tribune, April 15th, 2016.
