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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.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
There are more nerve cells in one human brain than there are stars in the Milky Way.