Updating the World. Er. Syed Thouheed Ahmed....
Saturday, June 09, 2012
Sperm on the surface of a human egg
Sperm on the surface of a human egg (close-up look)
Numerous sperm trying to to fertilise a human egg. They are trying to find their way through the zona pellucida, the membrane that surrounds and protects the egg.
Syed Thouheed Ahmed
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