Final answer:
Prions are acellular protein particles that cause spongiform encephalopathies in animals and humans.
Explanation:
Prions are acellular infectious particles made solely of protein that can cause spongiform encephalopathies in both animals and humans. They are unique as they lack DNA or RNA and are highly resistant to traditional methods of deactivation.
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https://brainly.com/question/37209346
