Mammalian prions. the pathogens that cause transmissible spongiform encephalopathies. propagate by self-perpetuating the structural information stored in the abnormally folded. aggregated conformer (PrPSc) of the host-encoded prion protein (PrPC). https://www.bekindtopets.com/super-value-Keychron-M4-Wireless-4K-Mouse-flash-choice/