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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.
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.