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[tTAV-OX5034]
[U.S. Environmental Protection Agency (EPA) has approved plans from biotech company Oxitec]

Turns Out Fighting Mosquitoes With Mosquitoes Actually Works

"The modified males mate with wild females, but the self-limiting gene prevents female progeny from surviving. This gene, which is lab-engineered but based on elements found in E. coli and the herpes simplex virus, causes the female offspring’s cells to produce lots of a protein called _tTAV._ This interferes with their cells’ ability to produce other essential proteins needed for development. As a result, the females die off before they mature and start biting. Male offspring survive, carrying a copy of the self-limiting gene that they can then pass on."