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

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

A year in the International Space Station changed some of the activity in astronaut Scott Kelly's immune system compared to his twin brother Mark, rendering his ...

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