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Coloured SEM of cracked eggshell

Coloured SEM of cracked eggshell

H110/0596

Rights Managed

36.4 MB (2.7 MB compressed)

3950 x 3225 pixels

33.5 x 27.4 cm ⏐ 13.2 x 10.8 in (300dpi)

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Credit

POWER AND SYRED / SCIENCE PHOTO LIBRARY POWER AND SYRED / SCIENCE PHOTO LIBRARY

Caption

Eggshell. Coloured scanning electron micrograph (SEM) of cracked shell from a hen's egg. Fragments of shell membrane can be seen adhering to the shell in the lower part of the picture. Eggshells are mainly composed of calcium carbonate. As the foetus develops within the egg it absorbs calcium from the shell and builds it into its skeleton. This changes the eggshell allowing it to permit the passage of carbon dioxide and oxygen and the release of water vapour via the shell membranes. The function of the shell is to protect the developing chick from trauma and dessication. Magnification: x120 at 6x7cm size.

Release details

Model release not required. Property release not required.

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