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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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Human Cardiovascular System
Bile duct system of the liver and gallbladder.
Example of a Regulatory System
Comparison of a single-stranded RNA and a double-stranded DNA with their corresponding nucleobases.