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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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.
According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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.
![The functional structure of the peripheral nervous system. (A) Afferent or sensory neurons carry sen](https://biology-forums.com/gallery/47/medium_14755_27_08_12_4_56_12_8219264.jpeg)
![The female reproductive system, sagittal view showing organs of the system in relation to the urinar](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_48_02_8245921.jpeg)