| 词汇 | prion |
| 释义 | prionpri·on /ˈpraɪɒn, ˈpriː- $ -ɑːn/ noun [countableC] a very small piece of protein that is thought to cause some brain diseases such as BSE 普里昂，蛋白感染粒，朊病毒〔被认为能导致疯牛病等脑病〕 Examples from the Corpus prion• There are three human prion diseases and four main prion diseases of animals.• Computer models are used to create three-dimensional models of prions, helping scientists understand the structural transformation they undergo to turn deadly.• A normal gene produces a normal protein, then something goes wrong and the body starts turning out prions.• No one has been able to create purified prions in a system that would rule out the presence of viruses.• Both patients described were heterozygous for the missense mutation at codon 200 of the prion protein gene.• Healthy proteins, which have not met up with prions, reside quietly in the membranes of nerve cells in the brain. (1900-2000) proteinaceous “containing protein” ((19-21 centuries)) + infectious particle |
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