Nearly 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.ly2NoPe4zÂ

Nearly 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/2NoPe4z 

Nearly 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/2NoPe4z 

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