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Fertilisation, artwork

Fertilisation, artwork

C009/2991

Rights Managed

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Credit

ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY

Restrictions:

Restrictions may apply. Please contact SPL for further details.

Caption

Computer artwork of sperm (spermatozoon, blue) attempting to penetrate a human egg (round). Women usually release one egg (ovum) per month, whereas men release millions of sperm in each ejaculation. Only one of these sperm can penetrate the egg's thick outer layer (zona pellucida) and fertilise it. Fertilisation occurs when the sperm's genetic material (deoxyribonucleic acid, DNA) fuses with the egg's DNA. When this occurs the egg forms a barrier to other sperm.

Release details

Model release not required. Property release not required.

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