Prion
Medical term · P
The smallest known infectious agent; unlike a virus or bacterium it is made entirely of protein and contains no nucleic acid or chromosomes.
Related terms
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ChromosomesThe genetic structures within cells which contain our DNA (the material that carries genetic information). A normal cell contains 46 chromosomes. See also gene.
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InfectiousConditions which can be passed from person to person by micro-organisms like viruses or bacteria.
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ProteinOne of the three major nutrients (along with carbohydrates and fats). It is used by the body for building and repairing tissues. Protein is derived primarily from animal sources…
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VirusA micro-organism which invades living cells in order to grow or reproduce. Viruses cause many infections, from the common cold, chickenpox and measles to HIV.