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PARIS: Investigators said on Wednesday they had made important lab discoveries in mosquitoes and the parasite which causes malaria, opening up new paths for attacking a disease that claims nearly a million lives per year. In one of two studies published in the British journal Nature, Yale University researchers said they had found more than two dozen smell receptors in the mosquito Anopheles gambiae that enables the insect to home in on human sweat. Some of the receptors "could be excellent targets" for chemicals to snare mosquitoes or repel them, said the study's senior author, John Carlson, a professor of molecular biology. "We're now screening for compounds that interact with these receptors," Carlson said in a press release. "Compounds that jam these receptors could impair the ability of mosquitoes to find us. Compounds that excite some of these receptors could help lure mosquitoes into traps or repel them. The best lures or repellents may b...