Did you know this?

When a human sperm cell makes contact with an egg, in appropriate lab situations, a flash of light is produced, which indicates that the egg has been successfully fertilized and can now develop into a healthy embryo. The spark occurs when a fertilized egg releases billions of zinc atoms at the exact moment of conception.

This discovery was recently made by the team of Teresa Woodruff, from Northwestern University in Chicago.

Some eggs produce brighter sparks than others, depending on their ability to develop into a healthy embryo.

Scientists have noticed this phenomenon in other organizations in the past, but this is the first time observed in human eggs.

Enjoy the amazing video:

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