Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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There are 60,000 miles of blood vessels in every adult human.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
A true albino squirrel. Note the pink eyes.
Benign prostatic hyperplasia. The condition results when an inner capsule of nonfunctional prostate
Benign Primary Bone Tumors
Adapoids and omomyoids had longer snouts and are the first “true” primates.