sentence: Prions are a form of virus that are basically abnormal clumps of proteins.
sentences_before: Some diseases are caused by 'infection'. Infection is when another organism gets into a person's body and causes harm. These four kinds of infectious agents cause most infectious disease. There are other kinds though.
sentences_after: We are not even sure that prions are alive. But they act just like other infectious diseases.
concept_name: prion
headings: Infection
categories: Infectious diseases Microbiology Parasitism