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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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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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There are more sensory neurons in the tongue than in any other part of the body.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

The wolf spider, Lycosa godeffroyi, is common in many areas of Australia. In this family of spiders, The wolf spider, Lycosa godeffroyi, is common in many areas of Australia. In this family of spiders,
Interior nodes represent common ancestors Interior nodes represent common ancestors
Common locations of venous thrombosis. (A) The most common sites of deep vein thrombosis. (B) DVT ex Common locations of venous thrombosis. (A) The most common sites of deep vein thrombosis. (B) DVT ex
Cholelithiasis. Common sites of gallstones in the generalized condition. (a) Stones in the hepatic d Cholelithiasis. Common sites of gallstones in the generalized condition. (a) Stones in the hepatic d
Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into
Stress and the Common Cold Stress and the Common Cold
Video: Protein catabolism - deamination

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