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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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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Germ plasm and primordial germ cells (PGC) during gastrulation. Germ plasm and primordial germ cells (PGC) during gastrulation.
Vacuoles in Plant Cells Are Usually Large Vacuoles in Plant Cells Are Usually Large
Examples of visual fields of simple cortical cells. Examples of visual fields of simple cortical cells.
Identification of the numbers in the Word Problem Identification of the numbers in the Word Problem
The hormone leptin is produced in fat cells, moves through the blood, and binds to receptors in the The hormone leptin is produced in fat cells, moves through the blood, and binds to receptors in the
Effect of nonsteroidal anti-inflammatory drugs (NSAIDs) on bicarbonate secretion by gastric cells Effect of nonsteroidal anti-inflammatory drugs (NSAIDs) on bicarbonate secretion by gastric cells
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