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Insects, mice, astronauts undergo cellular changes in space

More than 200 researchers conducted 30 studies on mice, insects and astronauts in space and identified six cellular and molecular changes that affect astronaut health: DNA damage, oxidative stress, changes in telomere length and the microbiome, mitochondrial dysfunction and gene dysregulation. "We now have a foundation to build on -- things we know to look for in future astronauts, including telomere length changes and DNA damage responses," said Susan Bailey, a co-author of three of the studies.

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