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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

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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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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

The accessory organs of the digestive system: the liver, gallbladder, and pancreas. Image shows the The accessory organs of the digestive system: the liver, gallbladder, and pancreas. Image shows the
Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen. Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen.
The carbon-nitrogen-oxygen cycle of The Sun The carbon-nitrogen-oxygen cycle of The Sun
John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d
Flow cytometry data that shows the differences in CD3+ CD4+ cells that occur with HIV infection. ... Flow cytometry data that shows the differences in CD3+ CD4+ cells that occur with HIV infection. ...
The nucleolus (arrow) is a prominent structure in the nucleus The nucleolus (arrow) is a prominent structure in the nucleus
Video: Embryonic development - Weeks 5 to 8

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