Prion
Prion explained in an easy to understand way:
Imagine you're at a party and someone starts a new dance move that quickly catches on, but without any music to guide it. This is similar to a prion, which spreads its influence not by genetic information like most infectious agents, but by altering the structure of proteins around it to mimic its form. Just like how the dance move spreads without a song, a prion propagates its infectious nature without the need for DNA or RNA, simply by changing the 'dance' of the proteins it encounters.
Practice Version
Prion: An infectious particle made up of protein instead of DNA or RNA. Prion. Prions are misfolded proteins that can cause diseases by triggering normal proteins in the brain to also misfold.