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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

The process of clot formation. The process of clot formation.
Hemodialysis. The process of hemodialysis replaces the kidney function of blood filtration by forcin Hemodialysis. The process of hemodialysis replaces the kidney function of blood filtration by forcin
Recovery process of ancient DNA. Recovery process of ancient DNA.
Functional MRI Scans These scans of human brains show localized average increases in neural activity Functional MRI Scans These scans of human brains show localized average increases in neural activity
The lost-wax casting process. The lost-wax casting process.
Video: Hershey Chase Experiments

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