carbon dating crystalline proteins eyes

Claire Schmidt, 34 years old


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The age of trees or fish is not the only one that can be determined through the analysis of carbon dating crystalline proteins eyes elements, like growth rings or scales. A radiocarbon dating technique can use special proteins in the crystalline lens of the eye for determining a person's age. Forensic scientists could this way give a precise age to unidentified bodies. The crystalline lens is made of tightly packed transparent proteins, acting like crystals focusing the light on the retina. These proteins are built only until the age of years, then the growth of the lens stops till you die. The new method measures the amount of the isotope Carbon C accumulated in the lens proteins.

Wrote the paper: NL HK. Lens crystallines are special proteins in the eye lens. Because the epithelial basement membrane lens capsule completely encloses the lens, desquamation of aging cells is impossible, and due to the complete absence of blood vessels or transport of metabolites in this area, there is no subsequent remodelling of these fibers, nor removal of degraded lens fibers. Human tissue ultimately derives its 14 C content from the atmospheric carbon dioxide. The 14 C content of the lens proteins thus reflects the atmospheric content carbon dating crystalline proteins eyes 14 C when the lens crystallines were formed. Precise radiocarbon dating is made possible by comparing the 14 C content of the lens crystallines to the so-called bomb pulse, i. Since the change in concentration is significant even on a yearly basis this allows very accurate dating.

Either your web browser doesn't support Javascript or it is currently turned off. In the latter case, please turn on Javascript support in your web browser and reload this page. Wrote the paper: NL HK. Lens crystallines are special proteins in the eye lens. Because the epithelial basement membrane lens capsule completely encloses the lens, desquamation of aging cells is impossible, and due to the complete absence of blood vessels or transport of metabolites in this area, there is no subsequent remodelling of these fibers, nor removal of degraded lens fibers. Human tissue ultimately derives its 14 C content from the atmospheric carbon dioxide.
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Using the radiocarbon dating method and special proteins in the lens of the eye, researchers at the University of Copenhagen and Aarhus can now establish, with relatively high precision, when a person was born. This provides a useful tool for forensic scientists who can use it to establish carbon dating crystalline proteins eyes date of birth of an unidentified body and could also have further consequences for health science research. The lens of the eye is made up of transparent proteins called crystallins. These are packed so tightly together and in such a particular way, that they behave like crystals, allowing light to pass through the lens of the eye so that we can see. From conception and up until a human being is years of age, the cells in the lens build these crystalline proteins.

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