False-colour TEM of an ovum during fertilisation

False-colour TEM of an ovum during fertilisation

P648/0015 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.5MB

Downloadable file size: 3.1MB

Price image Pricing

Please login to use the price calculator


Credit: EDELMANN/SCIENCE PHOTO LIBRARY

Caption: False-colour transmission electron micrograph (TEM) of an egg (ovum) during fertilisation, showing a single human spermatozoon that has just penetrated the zona pellucida, the thick membrane (top) that surrounds the oocyte, the female sex cell. The dart-shaped head of the sperm is pointing into a space between the zona and ooocyte (bottom). The sperm's head houses the nucleus which contains the 23 chromosomes of the male sex cell. Following the successful penetration of the oocyte by a single sperm, rapid chemical changes in the membrane surrounding the oocyte cause it to thicken and prevent entry of competing sperm. Magnification: x1000 at 35mm size.

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

Keywords: anatomy, false-coloured, fertilisation, fertilization, human body, in fertilisation, oocyte, reproduction, zona pellucida

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