In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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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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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Comparison of breast cancer and fibrocystic disease. (A) Breast with a malignant tumor growing in th
The Pituitary Gland
Hypothalamic and anterior pituitary tropic hormones.
Pituitary Hormones and Their Target Cells, Tissues, and Organs