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Author Question: Explain how parathyroid hormone (PTH) acts to increase blood calcium ion levels. (Read 36 times) |
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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.