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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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Approximately 25% of all reported medication errors result from some kind of name confusion.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

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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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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Regions of the Human Visual Cortex and Their Functions Regions of the Human Visual Cortex and Their Functions
Major Structures of the Human Brain Major Structures of the Human Brain
A colorized image of human chromosomes A colorized image of human chromosomes
Zone dimensions are not drawn to scale. Zone dimensions are not drawn to scale.
Video: The pH scale - Strong acids and Weak acids

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