A year in space put astronaut Scott Kellys immune system on high alert and changed the activity of some of his genes compared to his Earthbound identical twin. httpsbuff.ly2GRecbTÂ

A year in space put astronaut Scott Kelly’s immune system on high alert and changed the activity of some of his genes compared to his Earth-bound identical twin. https://buff.ly/2GRecbT 

16:11 EST 16 Feb 2019 | STAT

A year in space put astronaut Scott Kelly’s immune system on high alert and changed the activity of some of his genes compared to his Earth-bound identical twin. https://buff.ly/2GRecbT 

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