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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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.
Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.