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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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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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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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Vaccines prevent between 2.5 and 4 million deaths every year.

An Estimate of the Time of Global Peak Conventional Oil Production An Estimate of the Time of Global Peak Conventional Oil Production
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
Equipment used for administering inhalation medications. Equipment used for administering inhalation medications.
Most lifts are equipped with short pad extensions that are often necessary to use to allow the pad ... Most lifts are equipped with short pad extensions that are often necessary to use to allow the pad ...
Equipment and supplies needed for manual exfoliation using natural substances. Equipment and supplies needed for manual exfoliation using natural substances.
ATP Production in Cardiac Muscle ATP Production in Cardiac Muscle
Video: Magnetic resonance imaging (MRI)

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