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A contraceptive pill for men has moved one step closer after Australian researchers successfully made male mice infertile, according to a study published Tuesday.
Monash University scientists genetically modified mice to block two proteins found on the smooth muscle cells which are essential for sperm to travel through the animal's reproductive organs.
The result was that even though the mice had sex normally and were otherwise healthy, they were infertile, researcher Sabatino Ventura from Melbourne's Monash University said.
"We've shown that simultaneously disrupting the two proteins that control the transport of sperm during ejaculation causes complete male infertility," Ventura said.
"But without affecting the long-term viability of sperm or the sexual or general health of males. The sperm is effectively there, but the muscle is just not receiving the chemical message to move it."
More: Researchers Say They've Successfully Tested Male Contraceptive Pill for Mice