Space flight does not have a detrimental effect on a major part of the human immune system, according to new research which may alter how astronauts approach future missions. Scientists tested blood samples taken from 23 crew members who spent six months at the International Space Station (ISS), taken before, during and after their trips. Researchers examining the samples discovered that time in space caused no changes to levels of B-cell immunity - the white blood cells that produce antibodies to fight off infections.
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