In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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The horizontal fraction bar was introduced by the Arabs.
The regions of the brain.
The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland.
George Herbert Mead (1863– 1931) is one of the founders of symbolic interactionism, a major ...