A ‘Flash of Light’ in a Human Egg Is Reigniting Explosive Debate Over When Life Starts

5/2/16
 
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from Independent Journal,
5/1/16:

Researchers have filmed the lightshow that occurs when a human egg meets sperm- and some people are even calling it the spark of life.

For the first time, zinc sparks have been witnessed in a human egg—the size of the spark an indicator of the quality of the egg and its ability to develop into an embryo.

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