In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
Assessing for Bulge Sign, Milking the Patella
Audiometry. The child in this photograph is undergoing a hearing test with an audiologist.
A sidewheeler on the Mississippi. In 1856 Samuel Clemens became an apprentice to a steamboat pilot a
American Government: Roots and Reform, AP* Edition, 12th Edition
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?