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Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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The longest a person has survived after a heart transplant is 24 years.

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Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Noll's DNase-I digestion experiment, which verified the beads-on-a-string model of DNA compacti Noll's DNase-I digestion experiment, which verified the beads-on-a-string model of DNA compacti
Hormonal regulation of digestion rate in the stomach and small intestine. Hormonal regulation of digestion rate in the stomach and small intestine.
The male reproductive system, sagittal section showing the organs of the system and their relation t The male reproductive system, sagittal section showing the organs of the system and their relation t
Cross section of peritoneum with related organs and structures. Cross section of peritoneum with related organs and structures.
Pancreas: Digestion Wunderkind Pancreas: Digestion Wunderkind
Sagittal section of eye and its accessory structures Sagittal section of eye and its accessory structures
Video: The Pressure Flow Model in a Plant

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