Cyanide works by making the human body unable to use oxygen.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Illicit drug use costs the United States approximately $181 billion every year.
The functioning of the heart valves and blood flow.
Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp
Patient teaching: heart assessment
Normal oxygen sensor frequency is from about one to five times per second.