Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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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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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
Frozen human iPS cells
Soil texture "تركيبة التربة"
Coarse-Grained Igneous Texture
Soil Texture "مكونات التربة"
What is the strongest oxidizing agent of the following set: MnCl2, Mn(OH)3, MnO2, KMnO4?