BSE diagnosis. Illuminator being used to flash a light into a cow's eye as part of a test to diagnose BSE (bovine spongiform encephalopathy). BSE is caused by abnormal prions,which are virus-like proteins. The presence of the abnormal prions causes changes to cells in the cow's retina that can be detected by recording the retina's response to a flash of light. This is the first diagnostic test for BSE that can be carried out on a live animal | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Greenlee, Justin / US Department of Agriculture |
Taille de l’image : | 3661 px × 2746 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : | - |