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Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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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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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

A Border Marks Life and Death A Border Marks Life and Death
Types of muscle tissue. Types of muscle tissue.
Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th
Trichinella encysted in muscle tissue Trichinella encysted in muscle tissue
Children Understanding Death Children Understanding Death
The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

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