Scientists create method to mail freeze-dried sperm on postcards

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By DAVID PESCOVITZ 11:25 AM THU AUG 5, 2021

Scientists in Japan developed a method to freeze dry mouse sperm on sheets of specially-prepared paper. The sheets are stored in a “sperm book” and the samples could then be removed and attached to a postcard for mailing. The technique enables the sperm to be sent around to other researchers cheaply and safely. The University of Yamanashi scientists’ work builds on their previous efforts to preserve sperm in glass ampules to be transported to the International Space Station for experiments. Unfortunately, the ampules would break easily, requiring them to be protected with bulky cushions that took up room that could be used for more sperm. From ScienceDaily:

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