Fertilisation, SEM

Fertilisation, SEM

P648/0181 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 65.4MB

Downloadable file size: 4.2MB

Price image Pricing

Please login to use the price calculator


Caption: Fertilisation. Coloured scanning electron micrograph (SEM) of a group of human sperm (spermatozoa) trying to penetrate an egg (ovum). Only one sperm can penetrate the egg's thick outer layer (zona pellucida) and fertilise it. Fertilisation occurs when DNA (deoxyribonucleic acid) released by the sperm fuses with DNA contained in the egg. Women produce a single egg at a time, whilst men release around 500 million sperm. The sperm use their flexible tails to travel through the female reproductive tract. Only a few thousand sperm reach the egg, which is located in one of the two fallopian tubes.

Release details: Model release not required. Property release not required.

Keywords: anatomy, ball, biology, cells, coloured, cytology, egg, false-colour, false-coloured, female, fertilisation, fertilising, gamete, gametes, genetics, germ cell, globe, gynaecological, male, many, moving, multicoloured, multiple, one, ovum, penetrating, reproductive system, round, scanning electron micrograph, scanning electron microscope, sem, sex cell, sexual reproduction, single, sperm, spermatozoa, spermatozoan, sphere, spherical, swimming, tail, tails, zona pellucida

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.