Vasalgel与另一种化合物Risug（可逆抑精剂）类似，它在印度进行了试验，并证明对人类是安全有效的，然而Risug并没有筹集足够资金进入市场。
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RISUG has been shown reversible in animals.
RISUG在动物身上显现出了可逆性。
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The website HowStuffWorks has a fascinating article about RISUG that covers its genesis as a method to purify drinking water.
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