Chicken eggshell cross section, SEM

Chicken eggshell cross section, SEM

F017/4101 Royalty Free

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Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Coloured scanning electron micrograph (SEM) Chicken eggshell cross section (Gallus gallus domesticus). Shown from left to right in the image. hard mineralized eggshell, internal fibrous membrane and smooth inner surface of the internal membrane. The hard mineralized eggshell contains calcium carbonate (CaCO3) mineral crystals that form many tiny pores in the eggshell. The eggshell internal fibrous membrane is composed of protein fibres (internal and attached to the hard eggshell). The inner surface or the internal fibrous membrane is smooth. Several membranes are found around the embryo of a bird egg. The internal eggshell membrane adheres to the inner surface of the hard eggshell. As the chick develops changes in the eggshell allow the passage of carbon dioxide and oxygen and the release of water vapour by way of the eggshell membranes. Magnification: x80 when shortest axis printed at 25 millimetres.

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