False-colour transmission electron micrograph of scrapie-associated fibrils (red) in an extract of fresh brain from an infected sheep. Scrapie is a form of transmissible,slow virus encephalopathy which affects sheep & goats. Human slow virus encephalopathies include Kuru,Creutzfeldt-Jakob disease,& Gerstmann-Straussler syndrome. The agents causing these diseases form a group of virus-like organisms called prions. The scrapie- associated fibrils are believed to be aggregations of the major proteins of the infectious agents themselves. Magnification: x36,700 at 6x4.5cm size,x24,000 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / EM UNIT, CVL, WEYBRIDGE |
Taille de l’image : | 5015 px × 3832 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |