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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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