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Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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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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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Development of the human brain. Development of the human brain.
Cerebral aneurysm. A cerebral aneurysm is the abnormal dilation of arteries supplying the brain, whi Cerebral aneurysm. A cerebral aneurysm is the abnormal dilation of arteries supplying the brain, whi
Acetylcholinergic Pathways in a Rat Brain Acetylcholinergic Pathways in a Rat Brain
Role of the Brain Stem in Hunger Role of the Brain Stem in Hunger
brain brain
A resonance tube, called a Helmholtz resonator, is used on the intake duct between the air filter ... A resonance tube, called a Helmholtz resonator, is used on the intake duct between the air filter ...
Video: Introduction to Genetics

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