Prion spread. Artwork of a theoretical basis for the spread of prions at a cellular level. Prions are abnormal proteins that are the cause of transmissible spongiform encephalopathies (TSEs),such as BSE in cows,scrapie in sheep and CJD (Creutzfeldt-Jakob disease) in humans. They cause fatal brain and nerve degeneration. A normal form of prion protein (tiny green balls,lower centre) is made with instructions from cell nuclei (brown,one at bottom right). The prions (pink balls,upper right) are a different shape of this normal prion protein,and cause the normal ones to flip to the abnormal shape. Spread may be by nerve cells (top left) & white blood cells (lower left) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Kightley, Russell |
Bildgröße: | 3548 px × 2672 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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