Вопрос № 1006854 - Английский язык

A blood test is an extremely useful source of information about the health of a body. Because blood is affected by many medical conditions, the shape, size, behaviour, and numbers of blood cells reveal a lot, so blood tests are used to form diagnoses, and to monitor illness and the effectiveness of treatment. A blood test is fast, safe, and fairly reliable. Some tests can be done with only a drop of blood, whereas others may need a lot more. Blood tests give information about such thing as blood chemistry, kidney and liver function, hormone, cholesterol and glucose levels, and numbers of antibodies.
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What is blood affected by?

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What is blood affected by?
A blood test is an extremely useful source of information about the health of a body. Because blood is affected by many medical conditions, the shape, size, behaviour, and numbers of blood cells reveal a lot, so blood tests are used to form diagnoses, and to monitor illness and the effectiveness of treatment. A blood test is fast, safe, and fairly reliable. Some tests can be done with only a drop of blood, whereas others may need a lot more. Blood tests give information about such thing as blood chemistry, kidney and liver function, hormone, cholesterol and glucose levels, and numbers of antibodies.

Vitamins are believed to belong to ancient elementary organic compounds and to exist before life originated on Earth. According to Academician Chagovets vitamins took part in the building up of a primary organism together with such “blocks” of living matter as nucleic acids, proteins, aminoacids.
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Vitamin A is an unsaturated cyclic alcohol.
The source of all vitamin A is in the carotenoid pigments, the yellow-coloured compounds occurring in all chlorophyll-containing plants.
In pure form it is a pale yellow oil, soluble in fat solvents, having an ultra-violet absorption spectrum. The ester forms of the vitamin have been found to possess greater stability than the free alcohol.
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Vitamin С (ascorbic acid) is essential for the normal functioning of living cell and is involved in many enzymatic reactions. It is required for the development of cartilage, teeth and bones, for wound healing and aiding the absorption of iron from the intestine. Gross deficiency causes scurvy.
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To the ancient Egyptians, the heart was the centre of mental activity – the brain was unimportant. However, over the centuries the relationship between the brain and thought, language, and the senses has been revealed. The human brain is built around nerve cells called neurons from which Neurology gets its name. There are billions of neurons and they are in constant communication with other nerve cells. The brain deals not only with reasoning and language but also with autonomic functions (such as sweating and breathing that are not under conscious control). It also processes emotions and generates hormones.
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There is interconnection between …