Which of these diseases does not require the introduction of foreign nucleic acid?
kuru
polio
rabies
st. louis encephalitis

Kuru

Explanation:

Kuru are transmitted by prion. This diseases are untreatable and ultimately fatal.

Prions are infectious proteinaceous particle that are neither virus nor do they contain nucleic acid.

They are transmitted by ingestion of the infected nervous system tissues.They are normally found in the healthy brain tissues if this protein is mis-folded into denatured form it can cause disease.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

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