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Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Optic nerve, optic chiasm, ¬thalamus, and visual cortex. Optic nerve, optic chiasm, ¬thalamus, and visual cortex.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
A New Regulated Health Professional A New Regulated Health Professional
The Thalamus The Thalamus
Video: Hormonal feedback loop components

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