Images reveal secrets of zinc sparks
Detailed imaging and mapping techniques capture atoms shooting from mouse egg cell
![egg meets sperm](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/12/ticker_eggsparks_free-1.jpg?fit=860%2C460&ssl=1)
GOOD SHOT When egg meets sperm, billions of zinc atoms (yellow) shoot from thousands of small pouches that sit beneath the surface (green) of a mouse egg cell.
Northwestern Univ.