Mice have been used to produce viable monkey sperm using tissue transplanted from the testes of macaques. The latest procedure involves transplanting a tiny amount of testicular tissue from an immature rhesus macaque monkey under the skin of a lab mouse. After seven months, the testes grafts on the backs of the mice were seen to produce viable sperm. Grafting immature testis tissue appears to work because the host mouse had been castrated, Dobrinski says.
Mice produce sperm from monkeys:
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