(Parsemus Foundation) Vasalgel is a polymer gel that is injected into the vas deferens to block the flow of sperm and create a long-lasting contraceptive effect. Today, results of a study in rabbits published in Basic and Clinical Andrology showed that the contraceptive could be reversed by a second injection that resulted in a rapid return of sperm flow.
from EurekAlert! - Social and Behavioral Science http://ift.tt/2n8QfDX
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