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Did you know?

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.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Positive and Negative Symptoms of Schizophrenia Positive and Negative Symptoms of Schizophrenia
Factors Affecting Body Temperature Factors Affecting Body Temperature
The dorsal-column medial-lemniscus system. The pathways from only one side of the body are shown. The dorsal-column medial-lemniscus system. The pathways from only one side of the body are shown.
Negative and positive feedback loops Negative and positive feedback loops
Main body cavities that hold human organs Main body cavities that hold human organs
Two Cnidarian Body Plans Two Cnidarian Body Plans
Video: Carbohydrate Metabolism: Introduction to renal processes and filtrate formation and composition

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