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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

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In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

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Your heart beats over 36 million times a year.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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