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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Feeding groove and phagocytosis displayed by many species of supergroup Excavata. Feeding groove and phagocytosis displayed by many species of supergroup Excavata.
Species-rich Sonoran Desert landscape. Species-rich Sonoran Desert landscape.
Basic overview of energy and human life. Basic overview of energy and human life.
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
2006 Data:Top 25 Substances Involved in Human Exposures 2006 Data:Top 25 Substances Involved in Human Exposures
Human mtDNA molecule, showing the locations of HVS I and II regions relative to other mtDNA genes Human mtDNA molecule, showing the locations of HVS I and II regions relative to other mtDNA genes
Video: Aneurysm

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