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2003 JAN 2 - (NewsRx.com & NewsRx.net) -- Despite intensive research, scientists have so far failed to find the perfect contraceptive for women - let alone men. However, a study in freshwater fish of the carp family has found a parasite, Ligula intestinalis, that makes the fish infertile.
The infertility appears to be caused by a compound released by the parasite, which suppresses the production of eggs in females and sperm in males. Professor Chris Arme at Keele University has also shown that the contraceptive effect is evident when the tapeworm is inserted into nonhost species, such as toads.
Writing in the December 2002 issue ...
Source: HighBeam Research, Scientists note effect of the 'tapeworm contraceptive.(Ligula...