Year in space put US astronaut's immune system on high alert compared to his Earth-bound twin - Daily Mail

1. Year in space put US astronaut's immune system on high alert compared to his Earth-bound twin  Daily Mail
2. Year Spent in Space Altered Astronaut's Biology | News, Sports, Jobs  Wheeling Intelligencer
3. Space did WHAT to Tennessee grad Scott Kelly?  WVLT.TV
4. After twin-astronaut tests, NASA readies new wave of studies on space health risks  Yahoo News
5. NASA Just Announced More Strange Results From Its Ambitious 'Twin Study'  ScienceAlert
6. View full coverage on Google News

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