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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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Cyanide works by making the human body unable to use oxygen.

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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Hemiphlebia mirabilis, the Ancient Greenling, is a species of damselfly in family Hemiphlebiidae. Hemiphlebia mirabilis, the Ancient Greenling, is a species of damselfly in family Hemiphlebiidae.
Birth Clouds Birth Clouds
Baby orangutan Baby orangutan
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670 New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670
The risk of dying before the age of 65 gets lower as family income gets higher. The risk of dying before the age of 65 gets lower as family income gets higher.
PCR screens of Navajo affected with albinism (N4 and N5) and the parents of N4 (N2 and N3) PCR screens of Navajo affected with albinism (N4 and N5) and the parents of N4 (N2 and N3)
Video: Embryonic development - Week 3

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