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the main blood vessel that returns deoxygenated blood from the head and thorax to the right atrium of the heart.
drugs that are used to treat infections caused by bacteria. Many antibiotics are produced by...
a disease caused by the bacterium Vibriocholera, which produces a toxin in the lining of the...
the muscular tube of the mammalian digestive tract that links the mouth to the stomach.
a form of environmentally-friendly farming in which farmland and soil are cared for so that it...