Assertion: prion | /r/HasProperty | normal uninfectious form
Facets:
Source sentences:
text: They come in two forms, he found, with different shapes: a normal uninfectious form that all animals and people have that is particularly abundant in the brain (it is encoded by a prion protein gene) and a more stable disease-causing form.
text: Most prions occur in a normal, harmless form, but there are abnormal or infectious forms.