A shocking study reveals the effectiveness of “sperm” for 200 years


A new scientific study has found that the freeze-dried sperm of mice, which were stored aboard the International Space Station, for six years, did not suffer any damage to their DNA, and proved that they are capable of being used in vaccination operations.

According to the study, whose results were published in the journal Science Advances, mammalian sperm can be preserved on the International Space Station, without being damaged, for up to about 200 years.
According to scientist Sayaka Wakayama of Yamanashi University in Japan, the new study revealed the effect of “space radiation” on DNA, and the possibility of this causing mutations.
In their experiment, the researchers froze sperm samples from 12 mice, which were placed inside small, lightweight capsules that were flown to the International Space Station.
What distinguishes the experiment, according to what was reported by the British newspaper, The Independent, about Wakayama, is that there is a wide spectrum of radiation in space, unlike Earth, as there are heavy ions, protons, and electromagnetic waves from solar flares.
Scientists periodically examined small parts of the sample, and returned some of them to Earth after 9 months, and two groups were left aboard the International Space Station for two years and nine months, and for 5 years and 10 months, respectively.

When the researchers tested the samples with instruments that measured how much radiation they had absorbed, and conducted tests to assess DNA damage in the cell nucleus, they found that prolonged stays aboard the International Space Station did not damage the DNA in sperm.
The study indicated that the reactivated sperm cells after thawing led to the formation of embryos, when injected into the ovaries of female mice.
The scientists’ findings are important regarding the potential for mammals to reproduce in space, including humans.


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