July 7, 2021
A biological fireworks show, 300 million years in the making
Five years ago, researchers at Northwestern University made international headlines when they discovered that human eggs, when fertilized by sperm, release billions of zinc ions, dubbed “zinc sparks.” Now, Northwestern has teamed up with the U.S. Department of Energy’s Argonne National Laboratory and Michigan State University to reveal that these same sparks fly from highly specialized metal-loaded compartments at the egg surface when frog eggs are fertilized. The findings of the research, which could help shape future findings about how metals impact the earliest moments in human development were recently published June 21 in the journal Nature Chemistry.
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