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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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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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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.