Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter @sciencef1rst.
Rather than conducting their experiments in space, Westerberg and the team brought a little bit of space down to Earth. They used a custom-made waterbed that tricks the body into thinking it is in a weightless state, a technique called"dry immersion."
They discovered that the subjects' T cells had altered in conjunction with dry immersion, basically changing in terms of"gene expression," or simply which genes were active and which were inactive. Such gene expression altered significantly after 7 and 14 days of weightlessness, but the most extreme change came after 14 days.
"The T cells began to resemble more so-called naïve T cells, which have not yet encountered any intruders. This could mean that they take longer to be activated and thus become less effective at fighting tumor cells and infections," Carlos Gallardo Dodd, study co-lead and a doctoral student at the Karolinska Institute Department of Microbiology, Tumor and Cell Biology, said in the statement.
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