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Blood is approximately twice as thick as water because of the cells and other components found in it.

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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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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

A marine food web in action: feeding baleen whales and birds. A marine food web in action: feeding baleen whales and birds.
While numerous subspecies of the jaguar have been recognized, recent research suggests just three. G While numerous subspecies of the jaguar have been recognized, recent research suggests just three. G
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Mechanism of Action of Local Anesthetics Mechanism of Action of Local Anesthetics
Schematic depiction of the action of tryptophan synthase in one functional unit Schematic depiction of the action of tryptophan synthase in one functional unit
RESEARCH TECHNIQUE RESEARCH TECHNIQUE
Video: Transcription - Introns and exons

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