Cyanide works by making the human body unable to use oxygen.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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People about to have surgery must tell their health care providers about all supplements they take.
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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.
the four stages of the cell cycle
The Carbon Cycle
Acetoacetic acid
HIV cycle in an infected cell: (a) latent infection; (b) active infection.