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Did you know?

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.

Did you know?

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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

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The familiar sounds of your heart are made by the heart's valves as they open and close.

Pneumothorax. Figure illustrates how puncture of thoracic wall and tearing of pleural membrane allow Pneumothorax. Figure illustrates how puncture of thoracic wall and tearing of pleural membrane allow
lung cancer cell lung cancer cell
Pneumothorax; A, penetrating wound; B, ruptured bleb on the lung. Pneumothorax; A, penetrating wound; B, ruptured bleb on the lung.
Normal lung and one with emphysema. Normal lung and one with emphysema.
Chest CT scan. The stringy, cobweblike area indicates lung damage from smoking that has resulted in Chest CT scan. The stringy, cobweblike area indicates lung damage from smoking that has resulted in
Chest x-ray of lung cancer; cancer is seen on the left side. Chest x-ray of lung cancer; cancer is seen on the left side.
Video: DNA fingerprinting Animation

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