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Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Using a sphygmomanometer to measure blood pressure. Using a sphygmomanometer to measure blood pressure.
An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified. An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified.
Endocrine and nervous control of blood pressure. Endocrine and nervous control of blood pressure.
White Blood Cells Involved in Immune Response White Blood Cells Involved in Immune Response
Blood vessels: (A) normal artery; (B) constriction; (C) arteriosclerosis and atherosclerosis. Blood vessels: (A) normal artery; (B) constriction; (C) arteriosclerosis and atherosclerosis.
Methyl-directed mismatch repair in E. coli Methyl-directed mismatch repair in E. coli
Video: Inflammatory response Animation

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