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Fertilisation, artwork

Fertilisation, artwork

C001/6308

Rights Managed

50.2 MB (1.5 MB compressed)

3524 x 4984 pixels

29.7 x 42.2 cm ⏐ 11.7 x 16.6 in (300dpi)

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Credit

ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY

Caption

Fertilisation. Computer artwork of a sperm cell (blue) penetrating a human egg (ovum). Each sperm (spermatozoan) has a rounded head (acrosome) and a long tail with which it swims. Women usually release one egg per month, whereas men release millions of sperm in each ejaculation. Only one of these sperm will 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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