A rat which delivered oocytes, or eggs, fertilised with freeze-dried sperm stored for five years in ampules (at right), at Kyoto University's Institute of Laboratory Animals Graduate School of Medicine in western Japan. - AFP / Kyoto University
Scientists in Japan have launched a sperm bank for endangered animals that uses freeze-drying technology.
JAPANESE scientists have launched a sperm bank for endangered animals that uses freeze-drying technology that they hope could one day help humans recreate animal populations on other planets, the chief researcher said last Wednesday.
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