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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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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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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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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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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.

Examples of the results of sexual selection, a type of natural selection. Examples of the results of sexual selection, a type of natural selection.
Indian wild boar (Sus scrofa cristatus) at Ranthambore National Park Indian wild boar (Sus scrofa cristatus) at Ranthambore National Park
For centuries, widows in the Mediterranean countries, such as thise widow in Greece, were expected ... For centuries, widows in the Mediterranean countries, such as thise widow in Greece, were expected ...
Cellulose and chitin are examples of structural polysaccharides Cellulose and chitin are examples of structural polysaccharides
Examples of Tuberculin, Insulin, and 3-mL Hypodermic Syringes Examples of Tuberculin, Insulin, and 3-mL Hypodermic Syringes
Examples of Characters Examples of Characters
Video: Carpal Tunnel Syndrome

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