This image is not available for purchase in your country.

The embryo of a mouse at the four-cell stage

The embryo of a mouse at the four-cell stage

P681/0029

Rights Managed

This image is not available for purchase in your country.

Please contact your Account Manager if you have any query.

Credit

DAVID SPEARS LTD / SCIENCE PHOTO LIBRARY DAVID SPEARS LTD / SCIENCE PHOTO LIBRARY

Caption

Light micrograph of the embryo of a mouse at the four-cell stage. It is completely surrounded by a thin, resistant glycoprotein layer, the zona pellucida which a spermatozoon penetrated in order to fertilise the egg. A polar body is also here visible as a tiny sphere. At fertilisation three such cells are present together with the larger, fertilised egg cell known as the secondary oocyte. The secondary oocyte, by successive mitotic divisions, gives rise to the foetus whereas the polar bodies shortly degenerate. The embryo of a mouse reaches the four-cell stage 1.5-2 days after ovulation and, a day after, it enters the uterus. Magnification unknown.

Release details

Model release not required. Property release not required.

 {{ i.shot_duration ? i.shot_duration + ' ' : '' }}{{ i.shot_uhd ? '4K ' : i.hires ? 'HD ' : '' }}{{ i.spl_number }} R{{ i.license }}

  • Add to board
  • Similar {{ mediaType(i) }}