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Choosing the Good Eggs
Activity inside fertilized eggs might offer clues to their reproductive success—a finding with possible implications for in-vitro fertilization. By watching the tiny, pulsing motions of a newly fertilized mouse egg, researchers in a new study published in Nature Communications could determine which eggs stood the best chance of producing healthy mice. The same procedure should also work with human eggs, the researchers said yesterday, opening up the possibility of dramatically improving the success rates of in-vitro fertilization.