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Asthma cases in Americans are about 75% higher today than they were in 1980.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

In a craniotomy, a portion of the skull and overlying scalp is pulled back to allow access to the br In a craniotomy, a portion of the skull and overlying scalp is pulled back to allow access to the br
Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s Glioma. (a) Illustration of a large glioma (colored area) within the left cerebral hemisphere in a s
A cutaway view of a typical variable fuel sensor. A cutaway view of a typical variable fuel sensor.
Variable Gases of the Atmosphere Variable Gases of the Atmosphere
Testing motor function of cranial nerve VII - Smile Testing motor function of cranial nerve VII - Smile
List transformations and Create a table of values for the following log function: List transformations and Create a table of values for the following log function:
Video: What is Reverse Osmosis?

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