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Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Strawberry dart frog Strawberry dart frog
Electron micrograph of pre-rRNA transcription units from the nucleolus of a frog Electron micrograph of pre-rRNA transcription units from the nucleolus of a frog
Elephant Nose Fish Elephant Nose Fish
The mask covers both the mouth and nose to prevent exposure to body fluids and airborne droplets. The mask covers both the mouth and nose to prevent exposure to body fluids and airborne droplets.
Southern Leopard Frog eggs (Rana sphenocephala pipiens). Southern Leopard Frog eggs (Rana sphenocephala pipiens).
Video: Renal Failure

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