P624/0048 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 40.1MB

Downloadable file size: 1.8MB

Price image Pricing

Please login to use the price calculator

This image is part of the feature B B C


Caption: False-colour scanning electron micrograph (SEM) of a group of human spermatozoa, the motile, male sex cells, showing their division into head and tail sections. The sperm's tail enables it to swim, an essential action in reaching the female ovum. The mature male sex cell (male gamete) is located in the arrow-like head, the tip of which is capped by the acrosome, which releases enzymes that assist in the penetration of the egg during fertilisation. Only a single sperm succeeds in fertilisation; rapid chemical changes cause the outer membrane surrounding the ovum to thicken and form a barrier to competing sperm. Magnification: x1260 at 35mm size, x2520 at 6x7cm size.

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

Keywords: anatomy, biology, blue, false-coloured, gametes, human body, images, journey, journeying, journeys, magnified image, male cells, microscopic photos, reproduction, reproductive, reproductive system, scanning electron micrograph, sem, sperm, sperm (human), spermatozoa, subjects, travel, travelling, travels

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