Scientists got their results by exposing mice to heavy ion radiation, which is believed to be like the galactic cosmic radiation that someone would be exposed to in deep-space.

科学家们通过将小鼠暴露在重离子辐射下得出了他们的结果，重离子辐射被认为类似于人们在深空中暴露的银河系宇宙辐射。