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

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Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Ventilation of the mammalian lung by negative pressure filling. Ventilation of the mammalian lung by negative pressure filling.
Negative Feedback Insulin Glucagon Negative Feedback Insulin Glucagon
Gram Postive & Gram Negative Bacteria Gram Postive & Gram Negative Bacteria
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Positive and Negative Stereotypes Positive and Negative Stereotypes
Using Reinforcement Instead of Punishment Using Reinforcement Instead of Punishment
Video: Natural Selection, Species Isolation and Real World Example

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