Which infectious agent does not contain DNA or RNA?

bacteria
1897
virus
4765
fungus
3349
prion
22216
A prion is composed of protein in a misfolded form. When a prion enters a healthy organism, it induces existing, properly folded proteins to convert into the disease-associated, prion form; the prion acts as a template to guide the misfolding of more proteins into prion form.
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