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Reversible Male Contraception With Gold Nanorods 160

MTorrice writes "Men's options for birth control have significant downsides: Condoms are not as effective as hormonal methods for women, and vasectomies require surgery and are irreversible. Doctors and scientists have for decades searched for more effective and desirable male contraception techniques. Researchers in China now propose a nonsurgical, reversible, and low-cost method. They show that infrared laser light heats up gold nanorods injected into mice testes, leading to reduced fertility (abstract) in the animals."

Be careful when a loop exits to the same place from side and bottom.